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Human Sense of Smell Underestimated

Benjamin Long writes to note a study, by a team of neuroscientists and engineers, that demonstrated that humans can follow a scent trail — an ability that most had assumed only animals possessed. Furthermore, the study demonstrated for the first time that humans make use of differential information from the two nostrils. The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail. Here is the abstract of the paper in Nature Neuroscience. From the article: "The humans, however, still sniffed much more slowly than dogs, which may partially account for canines' greater efficiency at scent tracking. [A commentator] says that despite their relatively sluggish speed, the fact that subjects improved with training is noteworthy. 'I think that shows the effect of our distinctively different behavior in actually using this sense,' he says. 'The dog [has] been doing this its whole life, and humans [were] just asked to plunge in the first time they've ever done it.'"

278 comments

  1. hey... by Anonymous Coward · · Score: 0

    smell my finger...

    1. Re:hey... by Anonymous Coward · · Score: 4, Funny

      They eventually found the 'chocolate' left behind by the dog.

    2. Re:hey... by rudlavibizon · · Score: 1

      Smell the glove!

  2. Student Dignity by hadhad69 · · Score: 5, Funny

    The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail. This just proves students will do anything for $10

    --
    If you can read this, it's already too late.
    1. Re:Student Dignity by Timesprout · · Score: 3, Funny
      This just proves students will do anything for $10
      Na, they had to pay them $1000 to sniff out the RMS scented trail.
      --
      Do not try to read the dupe, thats impossible. Instead, only try to realize the truth
      What truth?
      There is no dupe
    2. Re:Student Dignity by Hijacked+Public · · Score: 2, Funny
      I also like that they trained them. For gun dogs this usually involves a shock collar and yelling things like "I said Whoa dammit".


      I hope it went down like that with these kids too.

      --
      "Sacrifice for the good of The State" - The State
    3. Re:Student Dignity by trybywrench · · Score: 4, Interesting

      This just proves students will do anything for $10

      before i settled on computer science i took a couple of pysch classes. We were required to participate in a couple of experiments each semester so that's probably why they did it.

      --
      I came to the datacenter drunk with a fake ID, don't you want to be just like me?
    4. Re:Student Dignity by Stanistani · · Score: 1

      Obviously they have no idea how Cinnabon markets its goods. Mmmmmm... Cinnabon.

    5. Re:Student Dignity by WilliamCotton · · Score: 2, Interesting

      Students WILL do anything for money. Shameless plug of friend's TV show...

      --
      I've always prefered a command line interface. GUIs are such a cursory way to interact with a computer.
    6. Re:Student Dignity by russ1337 · · Score: 3, Funny

      >>> "The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail"

      I'm not proud of it, but I've dated girls that'd crawl through grass on the scent of chocolate.

    7. Re:Student Dignity by Echnin · · Score: 1

      Sounds like fun to me, actually. I'd do it for free.

      --
      Lalala
    8. Re:Student Dignity by Rob+T+Firefly · · Score: 4, Funny

      So then it'd be more correct to say "students will do anything for course credit."

    9. Re:Student Dignity by Ingolfke · · Score: 1

      Actually the researches didn't pay them anything... they just setup a booth during rush week. KEEP SNIFFING PLEDGE!

    10. Re:Student Dignity by Trillan · · Score: 1

      Not me. I'd want a chocolate bar at the end. But I think that's fair.

    11. Re:Student Dignity by springbox · · Score: 3, Funny

      Uh, you both missed the point. It should be "This just proves students will do anything for chocolate "

    12. Re:Student Dignity by SpaceLifeForm · · Score: 4, Insightful
      Well, if they had used beer, the study would still be ongoing.

      --
      You are being MICROattacked, from various angles, in a SOFT manner.
    13. Re:Student Dignity by jazman_777 · · Score: 1
      This just proves students will do anything for $10


      I'd crawl over broken glass to get to chocolate.

      --
      Slashdot: Failed Car Analogies. Amateur Lawyering. Anecdote Battles.
    14. Re:Student Dignity by friedo · · Score: 1

      The ten dollars you would have earned could be exchanged for many chocolate bars.

    15. Re:Student Dignity by kinglink · · Score: 2, Funny

      If this was anywhere else I'd say beer could have been involved.

      Seeing as this was college, I'd say beer was DEFINATLY involved.

    16. Re:Student Dignity by SeaFox · · Score: 2, Funny
      "The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail."
      This just proves students will do anything for $10

      Soon to appear on YouTube!
    17. Re:Student Dignity by Anonymous Coward · · Score: 1, Insightful

      I'd say beer was DEFINITELY involved.

    18. Re:Student Dignity by Spokehedz · · Score: 4, Informative

      I also like that they trained them. For gun dogs this usually involves a shock collar and yelling things like "I said Whoa dammit".


      I hope it went down like that with these kids too.

      I understand your concern for dogs, but not all are treated like that. Most are either trained with clicker training (newer, not as widespread) or with the more traditional training which may use the shock collar--but I haven't seen it used in a very long time.

      Most police dogs are trained to think of work as a 'game' and as such they only respond to the games commands. "Lets go to work" is the police-dog equivilant to telling your dog "Lets go play" and everything after that is a 'game' to them.
    19. Re:Student Dignity by Trillan · · Score: 2, Funny

      True, but after following the scent of a chocolate bar, I'd want that chocolate bar right now, darnit. :)

    20. Re:Student Dignity by suggsjc · · Score: 1

      Yeah, but it would be difficult to explain that the reason you are hungover was due to a science experiment...

      --
      When I have a kid, I want to put him in one of those strollers for twins and then run around the mall looking frantic.
    21. Re:Student Dignity by LilGuy · · Score: 4, Funny

      You should be plenty proud that you've dated girls and are able to post about it on slashdot. You're a hero and an inspiration to so many here!

      --

      You're nothing; like me.
    22. Re:Student Dignity by LiquidEdge · · Score: 1

      So true, if it wasn't for the fans blowing out the smell, I would never have a single Cinnabon. I can track a Cinnabon through a mall faster than a white teenager can find an Abercrombie and Fitch sale.

      --
      Saving the World: One Drink at a Time
    23. Re:Student Dignity by Wyrmy · · Score: 1, Funny

      Actually it was only $707, after conversion.

      --
      Every act of conscious learning requires the willingness to suffer an injury to one's self-esteem.-Thomas Szasz
    24. Re:Student Dignity by flappinbooger · · Score: 2, Informative

      based on my college experiences, there are two scents that college students become very adept at tracking - beer and cigarettes. Well, make that three - beer, cigarettes, and pizza. And hearing, too - the Pssshh of a can of beer opening is very distinctive, much different than a soda.

      --
      Flappinbooger isn't my real name
    25. Re:Student Dignity by Monsuco · · Score: 1

      Of course collage students got more than $10, they got to keep the chocolate too.

    26. Re:Student Dignity by russ1337 · · Score: 3, Funny

      >>> You should be plenty proud that you've dated girls and are able to post about it on slashdot. You're a hero and an inspiration to so many here!

      Oh, did I say dated? To be accurate, I followed them.

    27. Re:Student Dignity by nten · · Score: 1

      Does this actually work? I guess it must. My uncle was explaining how he taught his 2yr old hunting dog to avoid the smell of rattlesnakes. It involved a shock collar which he seemed to imply was wide spread among hunting dogs, and turning it to full blast when the dog went to investigate a rattlesnake my uncle had just shot. The dog now avoids rattlesnakes, but perhaps there was a purely positive reinforcement method? If corporal punishment (yelling, spanking, shocking etc.) isn't necessary to teach children or pets I don't think we should use it, but I've always been a skeptic that you can teach something with which you have nothing more than emotive communication to avoid dangerous situations without some form of negative reinforcement. Especially in cases where one failure can mean death (a dog and a rattler, a kid and chewing on 110v cables).

      --
      refactor the law, its bloated, confusing and unmaintainable.
    28. Re:Student Dignity by StikyPad · · Score: 1

      Shock collars and profanity? Something smells fishy...

    29. Re:Student Dignity by StikyPad · · Score: 1

      Yeah, my roommate made a similar claim, and let's just say a permanent marker and some unsavory pictures begged to disagree.

    30. Re:Student Dignity by Dabido · · Score: 1

      That's still six degrees closer to a girl than most of us can get! :-)

      --
      Sure enough, the cow costume was hanging up next to the superhero outfit and sailors uniform. (S,Spud)
    31. Re:Student Dignity by Spokehedz · · Score: 1

      It's true that negative reinforcement will learn things like "Don't eat the wires" alot faster, because the end result is the same: If you eat the wires, you will get hurt.

      However, using negative reinforcement for things that will only be annoying--running in the flowerbed for example--then you are only teaching it to be mean back. Not only that, you can go into the flowerbed--and if you can do it, but they can't, they sometimes associate that you can be mean when your in there. My friend did this (hit his dog to stay off the couch) so now every time you sit down, it will bite at your legs while your on the couch--because it thinks its a game to be played there, on the couch.

      So, what you do is train them to not want to go into the flowers, by reinforcing the positive aspect of not going into the flowers in the first place. Then they won't have any desire to go into them--but still will if need be.

      This is the problem with 'invisible fences'. If you train them to not go past a certian point, they never will. Not even if your being dragged out of the yard kicking and screaming. So it's good to teach it not to leave, but you don't need to teach it 'If I go past this spot, I will get hurt.' beacuse what if they need to go out past that point?

    32. Re:Student Dignity by Anonymous Coward · · Score: 0

      The students demanded $15 when they found out the the brown thing at the end of the chocolate-scented trail wasn't chocolate.

  3. Worst. Smell. Ever. by AssCork · · Score: 4, Funny

    I was standing behind the server racks and I thought I could sqeeze off a silent fart without anyone noticing. Sadly the offending trouser bomb got caught up in the fans of a 4U Server. The cheese-scented ass gas was recirculated through every fan in the room evenly distributing its greasy essence all over the datacenter. None of my fellow technicians will speak to me since this awful and embarrassing emission.

    --
    The following replies are posted by unwashed nerds.
    1. Re:Worst. Smell. Ever. by megaditto · · Score: 3, Insightful

      If the odor was spread out evenly, how did they know it was coming from you?

      --
      Obama likes poor people so much, he wants to make more of them.
    2. Re:Worst. Smell. Ever. by exspecto · · Score: 0

      It had his name all over it.

    3. Re:Worst. Smell. Ever. by camperdave · · Score: 1

      Easy... Only one person on the IT staff eats limburger.

      --
      When our name is on the back of your car, we're behind you all the way!
    4. Re:Worst. Smell. Ever. by Jearil · · Score: 5, Funny

      I'm going to have to believe your story purely based on your user name.

    5. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 0

      You missed out on the all-important "He who smelt it, dealt it" defense... as long as you don't say anything, everyone is forced to suffer in anonymous silence
      the first person to speak of it becomes the guilty party

    6. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 1, Informative

      That's why you always need at least one H1-B in your team, to take the fall.

      Whenever you rip off a silent one, come over to Raji and ask him what kind of spices he puts in his food, then listen, not, and smile esoterically in plain view of your co-workers. As a bonus, the intern will think you are a nice guy for talking to him while everyone else accuses him of noxious flatulence for some resaon.

    7. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 0

      There was one guy at my old workplace who stank up the entire floor with a pungent, acrid stench. Maybe it was what he ate? Anyone who got laid off must have considered it a blessing.

    8. Re:Worst. Smell. Ever. by megaditto · · Score: 1

      Beware, just because the H1Ber makes less than you does not mean he is less intelligent than you.

      --
      Obama likes poor people so much, he wants to make more of them.
    9. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 0

      Re:Worst. Smell. Ever.
      This. Is. A. Very. Disturbing. Way. To. Write.
      Mod me down, i'm just pointing it out.
    10. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 0

      Don't do it.

      If you mod him down he will become more powerful than you can possibly imagine.

      I.E: It's a TRAAAAAP!!!!

    11. Re:Worst. Smell. Ever. by icedcool · · Score: 1

      Its funny that this comment is coming from someone named asscork.

      --
      Most people aren't thought about after they're gone. "I wonder where Rob got the plutonium" is better than most get.
    12. Re:Worst. Smell. Ever. by Anonymous Coward · · Score: 0

      And if I respond to the lame-ass joke with a subsequent, also lame-ass parody of the aforementioned lame-ass joke, it will become more stupid than you can possibly imagine.

  4. No surprises by edwardpickman · · Score: 4, Funny
    The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail.

    Most women can follow a chocolate scented trail, oddly enough the scent trail left by diamonds and currency works just as well. On the flip side most men are able to scent track women so I guess there's balance in nature.

    1. Re:No surprises by RAMMS+EIN · · Score: 1

      That also explains why men steal money and diamonds, but not chocolate. By the time the man gets to the end of the trail, the woman he's been tracking has eaten the chocolate.

      --
      Please correct me if I got my facts wrong.
    2. Re:No surprises by khedron+the+jester · · Score: 0

      Nice one.

  5. Duh? by Reality+Master+101 · · Score: 5, Insightful

    that demonstrated that humans can follow a scent trail -- an ability that most had assumed only animals possessed.

    Err, I recently smelled something burning. I walked through my house using my nose to follow the scent trail, and locate the single light bulb in the chandelier that had a tiny piece of plastic stuck to it that was burning (from a Christmas decoration).

    How do these researchers think I performed this amazing feat? Got out my hound dog and had him sniff around?

    --
    Sometimes it's best to just let stupid people be stupid.
    1. Re:Duh? by Anonymous Coward · · Score: 1, Interesting
      How do these researchers think I performed this amazing feat? Got out my hound dog and had him sniff around?


      Unless you were blindfolded, you could have used your eyes to look for the burning plastic. And since you knew that the light bulbs were on (and hot), you could have used your powers of deduction to guess that the chandelier was a likely place to look.


      Of course, since you never informed the researchers about your "amazing feat", it's not terribly surprising that they didn't know about it.

    2. Re:Duh? by Otter · · Score: 3, Informative
      How do these researchers think I performed this amazing feat?

      As I understand it, the prevailing idea was that you had to walk around or move your head to identify the smoke gradient, whereas these new results suggest that you can get directional information just from nostril separation, the way you determine the direction of sounds.

    3. Re:Duh? by otacon · · Score: 1

      Maybe I am a miracle of science, but I've always been able to tell which way a smell was coming from...you follow the smell until it becomes stronger then stronger then you will eventually get to the source...I don't see how this is ground breaking...

      --
      In a world of acronyms, the words are the real victims.
    4. Re:Duh? by Rei · · Score: 4, Interesting

      Who would have guessed that humans were animals after all? ;)

      Most people underestimate their sense of hearing as well. Have you ever seen any of those blind people who can use echolocation to scan an area? Pretty impressive. When I first saw a video of it, I decided to experiment around. I spun around in my (then apartment) to disorient myself, with the intent of "clicking" to orient myself. However, I found something odd: I couldn't disorient myself. There was a faint electrical hum in one corner of a room on the opposite side, and that was enough that my mind automatically reoriented me, even though that sound was undoubtedly bounding off of all sorts of surfaces to get to me. Our sense of hearing provides an excellent direction-finding ability, so the only extra components for echolocation is the ability to A) get a good echo, and B) to be able to handle more complex echo returns.

      So, I went online to see what experiments were out there. Apparently, they've done experiments in which humans are blindfolded and told to walk as close to an object as possible without running into it. They vary its distance with each run. At first, people either run into it or are way off. However, with successive runs, they become quite good at avoiding collision, ending up right next to the object. However, if you muffle their footsteps and plug their ears, they lose their ability to do this. The echoes from their footsteps are enough for them to find the object.

      --
      "Are you hungry? I haven't eaten since later this afternoon." -- Primer
    5. Re:Duh? by Otter · · Score: 4, Informative
      ...you follow the smell until it becomes stronger then stronger then you will eventually get to the source...

      That's the point -- the question is whether you can identify the direction without following it! (Which, apparently is also possible.)

    6. Re:Duh? by Reality+Master+101 · · Score: 2, Interesting

      you could have used your eyes to look for the burning plastic.

      I could have, but didn't. And that's a bit impractical looking at every square inch of the room to identify something small and burning (if you can even see what's burning).

      And since you knew that the light bulbs were on (and hot), you could have used your powers of deduction to guess that the chandelier was a likely place to look.

      Actually, I was predisposed to look for electrical shorts to find the burning source. It was only by following my nose that I figured out that wasn't it.

      --
      Sometimes it's best to just let stupid people be stupid.
    7. Re:Duh? by PingSpike · · Score: 4, Funny

      Your antecdote only further proves that you are in fact, a werewolf. And of course you didn't use your hound dog. You tore that poor thing apart during the last full moon.

    8. Re:Duh? by arth1 · · Score: 1
      Who would have guessed that humans were animals after all? ;)

      Except for the religious fools who won't accept the obvious, you mean?

      Yes, humans have pretty good smell, but tend to kill it by overexposure. After a few decades of highly perfumed "hygiene" products, air "fresheners", laundry dryer perfume, perfumed danglies in the car, scented candles, strong smelling food spices, incense, burning wood, tobacco, weed, medicines, well, we end up quite insensitive.
      When I was younger, a waft of coffee or bread was enough grab my stomach in a fist and twist it -- these days, I can't smell the coffee at all unless it's brewing, and can hardly smell bread either. Nor chocolate.

    9. Re:Duh? by bendodge · · Score: 1, Interesting

      Actually, Edgar Rice Burroughs said in Tarzan that the human sense of smell is just as good as animals, but is usually undeveloped because it isn't used much.

      --
      The government can't save you.
    10. Re:Duh? by MBGMorden · · Score: 1

      you could have used your eyes to look for the burning plastic. I could have, but didn't. Good thing we have good scientific testing on this one :). From now one we'll just ask test subjects if they cheated.
      --
      "People who think they know everything are very annoying to those of us who do."-Mark Twain
    11. Re:Duh? by martyros · · Score: 2, Interesting
      Except for the religious fools who won't accept the obvious, you mean?

      When was the last time you saw an animal create art? Or music? Or contemplate quantum physics? Or do something out of moral duty? Or exhibit any signs of any sort of religion at all? If your dog, or any other animal on the planet did any of these things that humans do on a regular basis, it would make world-wide news.

      Yes, there are certainly some similarities between the biology of humans and animals. But to ignore the differences is just as willfully blind as those who ignore the similarities.

      --

      TCP: Why the Internet is full of SYN.

    12. Re:Duh? by Anonymous Coward · · Score: 0

      I spun around in my (then apartment) to disorient myself, with the intent of "clicking" to orient myself. I bet you're a blast at parties. "There's ol clicker! Let's blindfold him again and lock him in the closet!"
    13. Re:Duh? by FLEB · · Score: 1

      There was a faint electrical hum in one corner of a room on the opposite side, and that was enough that my mind automatically reoriented me, even though that sound was undoubtedly bounding off of all sorts of surfaces to get to me.

      It still would work as an orientation device, as long as it never changed its position.

      --
      Information wants to be free.
      Entertainment wants to be paid.
      You just want to be cheap.
    14. Re:Duh? by Anonymous Coward · · Score: 0

      Yeah, obviously only plants can create art or music or contemplate quantum physics. Hint for the dumbasses: humans are animals. Every species of animal thinks it's the most special and utterly unique in every important way, created in God's image. Get over it, animal.

    15. Re:Duh? by HateBreeder · · Score: 1

      You're missing the point.
      People would not lie to themselves.
      He KNOWS he used his sense of smell. that is enough.

      That makes this whole research quite obvious to anyone who ever.. well, experience life.
      I can think of a handful of times i used my sense of smell to locate something.
      Even if it's just a "pointer" in the direction i needed to search - and the rest was done via other senses and deduction.... it's enough to make the point that I used my sense of smell to track something.

      Waste of research money.

      --
      Sigs are for the weak.
    16. Re:Duh? by GTMoogle · · Score: 2, Interesting

      Birds make nests and sing songs that are judged by the tastes of other birds. Whales sing complicated songs that change year to year. Many animals, especially dogs (that people see, since people associate with them often), have exhibited various self-sacrificing tendancies such as saving people or other animals, or caring for young that aren't theirs, giving up food for disadvantaged peers, etc.

      Chickens, when fed at random intervals, will start to develop weird behavior based on their guesses at what the cause of being fed was. That sounds a lot like most religions I'm aware of.

      Most people in the world see things as they already believe them to be.

    17. Re:Duh? by dhalgren · · Score: 4, Interesting

      Years ago when I was studying ju-jutsu, we got into basic blindfighting. We'd have to kneel facing our partner while blindfolded. At first, our knees would just barely be touching. Then the non-blindfolded partner would start throwing very slow punches, which the other person would have to try to block. Then we'd move slightly farther apart, and punch slightly quicker.

      At first I thought "OK, what the hell kind of bogus ninja crap is this?" And at first there were many cheeks getting tapped. But before too long, most of us found that we could in fact block the punches. Not fast ones (I moved away shortly after this so I don't know what the others achieved in the end), but it was still pretty weird. Even in a room full of rustling gis, you would still be able to get enough audio cues (and at first, tactile ones from the touching knees) to tell more or less where the hit was coming from.

      It was pretty cool. I'd love to know how far that could be taken.

      Torben

    18. Re:Duh? by NoTheory · · Score: 2, Informative

      Human introspection is terribly inaccurate. Self-reporting is not effective, especially when it comes to psychometric testing. The things that humans do to bias studies are so subtle that they often don't know they're doing it. That's why Double Blind testing methodology exists.

      So sorry, but you've missed the real point.

      --
      There are lives at stake here!
    19. Re:Duh? by jovius · · Score: 1

      I believe the effect you are referring to in the second example is called comb filtering.. the mechanisms of hearing are also connected with the sense of balance. Amazingly delicate system. I can't help thinking the group of people clicking and slowly walking around eyes closed in the world now however..

    20. Re:Duh? by NoTheory · · Score: 1

      Meh, i wasn't clear enough. Self-reporting is terribly ineffective. Even testing done by another person can be biased, which is why things like Double Blind testing methodology exists.

      Self-reporting is so bad because humans only have access to the inner workings of their faculties at a certain level of granularity. Researchers can bias subjects towards the result they hypothesis they support (consciously or subconsciously) in a single blind experimental setup, which is why double blind experiments are done for tests where there are important motivational factors to take into account (i.e. no drug company wants their tests to fail FDA approval testing)

      --
      There are lives at stake here!
    21. Re:Duh? by Caffeinate · · Score: 1
      There was a faint electrical hum in one corner of a room on the opposite side . . .
      How do you wish to proceed?

      > Investigate.

      Unknown command.

      > Look.

      The room is dark. > Sniff.

      You detect an acrid scent in the air.

      You find . . . a Shield of Lightning +3!

      No, I have no idea why that sentence reminded me of text-based RPGs. My mind is a frightening place.

      --
      Godless heathen.
    22. Re:Duh? by Original+Replica · · Score: 2, Insightful

      I understand the difference you are suggesting, but doubt that was what the researchers found. Even trained dogs move their heads from side to side, determining a direction to the source by comparitive scent levels. If the students had their heads immobilzed and could still indicate a direction, that would be a different matter.

      --
      We are all just people.
    23. Re:Duh? by flappinbooger · · Score: 2, Interesting

      "It was pretty cool. I'd love to know how far that could be taken."

      I'm not saying that Jean Claude's movies Kickboxer and Bloodsport are documentaries, but I would wager that the blind fighting parts portrayed in those movies are significantly more fact than fiction. IOW, I think it can be taken pretty far.

      Here's something to ponder - the capabilities of human vision and the interpretation of what we see, all the amazing things we take for granted like driving a car in bad weather, doing 3D cad, flying fighter jets, whatever. The brain's processing power that interprets visual information so impressively is also available for the ears as well - and the nose, and touch, what about taste? It involves training, don't you think? Blind people do braille pretty well, and identify people by their footsteps, and so on. The amazing feats are available through practice, but no-one does it because we don't have to. hmmm....

      --
      Flappinbooger isn't my real name
    24. Re:Duh? by modecx · · Score: 1

      When was the last time you saw an animal create art? Or music? Or contemplate quantum physics? Or do something out of moral duty? Or exhibit any signs of any sort of religion at all?

      Fuck that... Let's go to some random intersection in LA and pick out a hundred people at random so we can observe them for these behaviors. Have you ever seen Jay Walking?

      Heck, you're most likely not much better with a stupid argument like that. I've seen a few apes make more compelling arguments whilst picking their asses.

      --
      Constitutional rights may be respected, repealed, or modified; but they must never be ignored.
    25. Re:Duh? by poopdeville · · Score: 1

      When was the last time you saw an animal create art? Or music? Or contemplate quantum physics? Or do something out of moral duty? Or exhibit any signs of any sort of religion at all?

      I see this all the time. People are animals, full stop.

      --
      After all, I am strangely colored.
    26. Re:Duh? by CAIMLAS · · Score: 1

      Yep. Part of it is just memorization too, though.

      I personally do not use household lighting to get around; all the lights stay on after dark, even in the basement. I've only very rarely bumped into or stepped on things, and that's when they've been put there by my (3-year-old) son. I've simply memorized where everything is, from the washer (which I load and set in the dark) to the chairs, tables, and various other boxes of things I tend to leave laying around (not the tidiest or most organized person, but not messy, either.)

      Granted, I've got my wife turning on all the dman lights in the house, resulting in me having to chase aftre her turning them off, so maybe I've got a frugality sense, too...

      --
      ~/ssh slashdot.org ssh: connect to host slashdot.org port 22: too many beers
    27. Re:Duh? by potat0man · · Score: 1

      That's not following a trail, that's just smelling.

      Now if you took chocolate and had someone drag it along the floor in a zig zag and you were later able to identify with your nose what precisely that zig zag pattern was then you would be following a scent.

    28. Re:Duh? by JohnFluxx · · Score: 1

      > People would not lie to themselves.

      But they do. Big time. That's the problem. Pick up any psychology text book and have a read - a lot of interesting stuff.

    29. Re:Duh? by arth1 · · Score: 1
      When was the last time you saw an animal create art? Or music? Or contemplate quantum physics? Or do something out of moral duty? Or exhibit any signs of any sort of religion at all? If your dog, or any other animal on the planet did any of these things that humans do on a regular basis, it would make world-wide news.

      As others have pointed out, animals do indeed have art, music, a sense of duty, and how do you know what they contemplate? As for religion, animals appear to be smarter than that, but again, we don't know.

      Yes, there are certainly some similarities between the biology of humans and animals. But to ignore the differences is just as willfully blind as those who ignore the similarities.

      If so, you must be willfully blind if you ignore similarities and differences in order to classify "humans" apart from "animals". Which species are more similar? A chimpanzee and a human or a chimpanzee and a duck-billed platypus? Yet you lump the latter two together, and set the human apart? That takes not only willful but skillful ignorance.
    30. Re:Duh? by martyros · · Score: 1

      Those are good points, so let me talk about them.

      I haven't looked at research about song birds or whales, but let's take what you say to be true. Do we know what the "taste" of birds is based on? Is it based on how aesthetically pleasing it is? Is it based on how well it expresses an emotion or soul of something? Is there any evidence that whale song or bird song are intended to express their emotions?

      About self-sacrificing behavior: there are plenty of animals that have altrusitic instincts (including humans). But is this behavior done out of a sense of moral duty? I have a cat, and she certainly has emotions and affections. She knows there are rules in the house and will generally obey them, but I never get the idea that she obeys the rules out of moral obligation; rather, she knows the consequences and wants to avoid them. I certainly do a lot of "right" things out of instinct or self-interest, but that doesn't negate the fact that I do have a sense of moral duty that occasionally pops up and tells me to do something entirely opposed to my strongest instincts or desires.

      Again, I haven't seen the data on the chickens, but that sounds a lot like superstition, not religion -- and there is a difference. I've seen a lot of people approach religion like a superstition -- trying to see "signs" in everything and figure out the "trick" to what God wants them to do, or wearing crosses and other religious paraphenalia like good luck charms. ("My Jesus decal does quite a trick / Right up on my dashboard I stick it / A good luck charm / It keeps me from harm / And saves me from speeding tickets" -- Smash Hit by All Star United) I've also seen real religion -- a lot of genuine Christianity, some genuine Islam as well. There is a clear difference.

      Most people in the world see things as they already believe them to be.

      That's true. However, I should point out, that in general it's appropriate for someone to fit a new piece of data into their existing intellectual framework before reworking or discarding bits of it. If someone completely changed their entire belief system every time someone presented them with a new argument, we wouldn't call that "open-minded", we'd call it "flaky" and "unreliable".

      --

      TCP: Why the Internet is full of SYN.

    31. Re:Duh? by Rei · · Score: 1

      I can assure you that at least some birds have creative impulses. Corvines (ravens, crows, jays) have been observed making and using tools, such as whittling down branches to reach into holes and bending paper clips to open latches. One of my aunt's parrots loves to do "mashups" of songs that she had been taught. You hear songs like "I left my heart in Bali High". She also changes the tunes up. Psitticines (parrots), too, have been known to use tools, such as picking up a loose feather and using it to scratch themselves. They're also pretty good at solving puzzles. Even my baby Amazon has already figured out the clasp on one of my shirts and can now dissect a wooden clothespin in seconds. Probably the most impressed with him I've been was when he figured out how to get treats from the end of a bungee cord dangling on the end of a rope. The treats were at eye-level for him, but there was an obstacle that I wanted him to climb on (which he hates to stand on) in the way. Rather than climb on the obstacle, he climbed the rope, grabbed onto the cord, and climbed down the rope while holding the cord, then wrapped it around the obstacle so that he could eat at his leisure. He first did that at age 4 1/2 - 5 months old. With their development speed (peak learning from 6mo to 1 1/2 years, and puberty starts anywhere between 3 and 6 years), that's perhaps the equivalent of a 12-14 month old human.

      As for whether parrots express their emotions with the noises that they make, they most certainly do. For example, when my parrot is sleepy and content, he loves to talk to himself. Often using non-words, just made up sounds that make him happy. It's really cute. If he's sleepy but upset (for example, when we put him to bed and he doesn't want to go), he doesn't do that -- he makes pathetic whimpering sounds.

      I have a cat

      Probably the worst pet you could have picked. ;) Cats are the type of animal that, if you died today, as they wheeled you out on the stretcher, your cat would be there, batting at the toe tag. Not so with dogs. When a dog loses someone, it becomes depressed. *Really*, *obviously* depressed. They'll often refuse to eat. They whine. They don't respond to attention. They'll look around for the person, even walking long distances to places where the person used to go to try to find them. They are quite visibly upset.

      sounds a lot like superstition, not religion

      You're not going to like me for saying this, but religion is superstition (def. 5 from dictionary.com: "any blindly accepted belief or notion", and to a lesser extent, def. 1: "a belief or notion, not based on reason or knowledge, in or of the ominous significance of a particular thing, circumstance, occurrence, proceeding, or the like.")

      --
      "Are you hungry? I haven't eaten since later this afternoon." -- Primer
    32. Re:Duh? by GTMoogle · · Score: 1

      Good reply.

      Perhaps I'm being a little cynical, but I'm not entirely sure that many humans are capable of everything you describe, either. Moral duty, for example, is one measure on a scale of obedience. The low end is avoiding punishment, and it goes through authority, respect, etc. Your idea of moral duty is viewable as little more than a highly developed sense of altruism. While it might be a good trait in societies, from some pragmatic viewpoints, it's also just stubborn habit and isn't optimal behavior.

      Personally, I think the most important piece of human intelligence is symbolism. Being able to express feelings in a painting of a scene that couldn't exist is made up of little pieces that begin with being able to contemplate object that aren't in immediate sight. I haven't tried to break things down myself, but I have a suspicion that our great reasoning is made up of hundreds of layers of abstraction, both learned through life and developed over generations.

      Animals are probably capable of this kind of abstraction but it is only useful to them in a limited sense. It took thousands of years of unique circumstances until a person could eat by making emotional artwork.

      And I do have to apologize, I can get a little snarky on religion, not always with good reason. I'm just not convinced that Religion is, again, anything more than a highly developed superstition.

    33. Re:Duh? by kinko · · Score: 1

      put some headphones on, close your eyes, and listen to this: http://media.putfile.com/Cereni---Holophonic

      It's quite amazing how we can subconsciously determine the size of a room based on the echoes off the walls/ceiling/floor :)

  6. Not news to me by eclectro · · Score: 1

    I can sniff out a KFC five blocks away and my sniffer can lead me there.

    --
    Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
    1. Re:Not news to me by heauxmeaux · · Score: 0, Funny

      I found a beak in my 25 piece value-lunch-tub-bucket-meal.

      --
      Beat 'Em and Eat 'Em
    2. Re:Not news to me by DarrylKegger · · Score: 1

      I found a beak in my 25 piece value-lunch-tub-bucket-meal.

      sounds like you just found the perfect little stocking filler!

    3. Re:Not news to me by Eideewt · · Score: 1

      This supports my hypothesis that unpleasant odors attract our attention more.

    4. Re:Not news to me by lupinstel · · Score: 1

      Go back for a refund. The 25 piece bucket meal should have 10 biscuits, 2 mashed potatoes & gravy and 3 beaks.

      --
      Don't blame me, I voted for Cthulhu.
  7. On the Internet... by russotto · · Score: 4, Funny

    ...no one knows you're a dog. Until you start bragging about your scent-tracking superiority, then you've given away the game.

    1. Re:On the Internet... by Anonymous Coward · · Score: 0

      Yes, I am a fox. So? I dont see any problem. I embraced my animal soul long ago...

    2. Re:On the Internet... by Anonymous Coward · · Score: 0

      Shit. Somebody let the furries in.

      Run away! Run Away!

  8. Well... by rarel · · Score: 1

    I for one welcome our Blindfolded Crawling Chocolate-Tracking Overlords!

    1. Re:Well... by jlawson382 · · Score: 1

      I, for one, hope that they're not Business majors fulfilling a Ged Ed requirement... else you very well may welcome one of them as your overlord someday.

  9. sense of smell first to develope by lashi · · Score: 2, Interesting
    Hmm.. I remember reading somewhere that sense of smell is first to develope, then it gets surpassed by sense of sight and eventually relegated to background.

    I, for one, can't even smell my own breath.

    ----------

    say what's on your mind - online confession and send anon email at my website http://www.sayitt.com/

    1. Re:sense of smell first to develope by LordNimon · · Score: 1

      I, for one, can't even smell my own breath.

      Well I can smell it. Geez, dude.

      --
      And the men who hold high places must be the ones who start
      To mold a new reality... closer to the heart
    2. Re:sense of smell first to develope by value_added · · Score: 1

      Hmm.. I remember reading somewhere that sense of smell is first to develope, then it gets surpassed by sense of sight and eventually relegated to background.

      I'm sure that's been carefully studied and quantified, but when you're born your eyes aren't very developed, not that you'd be capable of understanding what you see.

      My theory is that, at least with respect to dogs, their sense of smell remains well-developed and prominent for a number of reasons. They're closer to the ground. They don't use tables or chairs, but prefer to eat on the ground, where everything else is anyway. Dogs breathe at a different rate than we do, so even though both of us have double nostrils, they take in the smells around them faster. A big wet nose is always more sensitive than a narrow one that's typically filled with dust.

      More importantly, the interesting part of the female of the species is always at nose level.

    3. Re:sense of smell first to develope by Bertie · · Score: 1

      Be thankful for small mercies, eh?

    4. Re:sense of smell first to develope by Yewbert · · Score: 1

      I'm sure there's a joke in here somewhere about the fact that, except for the lead dog, most things that most dogs smell, smell like, and in fact *are*, ass.

    5. Re:sense of smell first to develope by Idarubicin · · Score: 2, Interesting
      I, for one, can't even smell my own breath.
      Well, of course you can't. That would make your sense of smell totally useless, now wouldn't it? I mean, have you smelled a dog's breath lately?

      Through a process called sensory adaptation, your brain automatically starts to ignore persistent stimuli. Ever notic how if a room has a particular smell, you only notice right after you walk in? The perception fades after a period of exposure; something similar happens with the smell of your breath.

      If you told us that you couldn't smell other people's breath, then I'd wonder about your sense of smell.

      --
      ~Idarubicin
    6. Re:sense of smell first to develope by exp(pi*sqrt(163)) · · Score: 4, Funny

      OK, I'm going to have to say some disgusting stuff in the service of science.

      There's an easy experiment to demonstrate that humans have the ability to distinguish smells very finely. The point is, humans (at least the ones I know) don't mind the smell of their own farts, but can't stand the smell of others. This means that humans have the ability to distinguish between their own farts and the farts of everyone else. Now there are three obvious classes of mechanism for this:

      (1) Humans can distinguish between their own farts and every else's - ie. they can partition fart smells into self and non-self

      OR

      (2) Humans can distinguish between everyone's farts.

      OR

      (3) Various shades in between.

      Now consider hypothesis (1). This is pretty preposterous. Chemical sensors in our nose that can only distinguish fart smells into two classes, self and non-self, would be ridiculously specialised. So we're left with (2) or (3).

      Now consider (3). To the extent that you can't distinguish self from non-self, there are people's whose farts you can't distinguish from your own. In other words, (3) implies there are other people whose farts you don't mind. This is simply too disgusting to contemplate and no benevolent deity could have created a universe like this.

      So we are led to conclusion (2).

      Anyway, I think more experiments are needed. I think this is an example of low hanging fruit if someone is seeking an Ig Nobel prize.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    7. Re:sense of smell first to develope by ars · · Score: 2, Interesting

      Actually there is another option.

      You can absorb gasses via the digestive tract, if you have farts building up in there some of them will be aborbed, and will circulate.

      Eventually reaching the smell cells. Via the Sensory adaptation mechanisim mentioned above, you end up not being able to smell parts of your own fart, so it doesn't smell as bad to you when it's in the room.

      PS. I have nothing to back this up, I made it up myself. Is it true? Where are those Ig Nobel researchers?

      --
      -Ariel
    8. Re:sense of smell first to develope by autophile · · Score: 1
      This means that humans have the ability to distinguish between their own farts and the farts of everyone else. Now there are three obvious classes of mechanism for this...

      I notice you didn't include the obvious:

      4) I *know* that I didn't fart, therefore I *know* it's some else dealt it.

      --
      Towards the Singularity.
    9. Re:sense of smell first to develope by Mr.+Underbridge · · Score: 1

      It's called "habituation." Also the reason you can't smell plain water - your nasal epitelium is always 100% saturated with humidity.

    10. Re:sense of smell first to develope by exp(pi*sqrt(163)) · · Score: 1

      That's subsumed into the scary possibility that I pointed out: that you can't actually distinguish some farts. Scary, because it's possible that you might breathe deeply of what you think is your own but is actually someone else's silent emission...ew...ew...enough of this subject already...

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    11. Re:sense of smell first to develope by exp(pi*sqrt(163)) · · Score: 1

      No, that won't do at all. What you're saying here is that smells coming up directly from the digestive tract (implausible, but let's allow it for now) can knock out certain smell sensors in the nose so that you can still smell other people's doings. But think about it. That still requires a highly selective nasal system - one where you can selectively knock out one very specific smell. If the nose wasn't discriminating, smells coming up directly would knock out all fartlike smells. That doesn't happen. So your argument doesn't show that the nose isn't super-discriminating.

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    12. Re:sense of smell first to develope by Anonymous Coward · · Score: 0

      Sure cutting one now and again can be a relaxing thing that doesn't bother me, but a few times I have surprised and offended myself with a noxious odor that I prayed would dissipate before somebody had me arrested for chemical warfare.

      I hesitate to construct the appropriate metaphor. Dissecting a skunk with filthy gym socks for gloves and a used diaper for a mask? The problem is that it's like laughing gas and mustard gas at the same time. Breathing is undesirable, but being a walking hazardous area is really funny. So far I haven't hurt anybody but myself.

    13. Re:sense of smell first to develope by mkw87 · · Score: 1

      Where I come from, it's only a good one if you can taste it.

      --
      Arguing with an engineer is like wrestling a pig in mud. Soon, you realize the pig is dirty, and he likes it.
    14. Re:sense of smell first to develope by vuo · · Score: 0

      No two farts smell the same.

      (That was poetic.)

      Humans are able to distinguish the smells of different chemicals, bad-smelling or not. In fact, human flatus has a highly variable composition and depends on the diet, individual microflora composition, physiology and diseases (if any). You are familiar with the smells originating from your original diet, but not with those of others.

      To crank up the disgustingness factor, I've noticed that when I'm traveling, farts change their smell. The creepiest example was when I visited a Russian sewer (don't ask), and noticed a certain similarity afterwards. It has a lot to do with the local pervasive microflora.

    15. Re:sense of smell first to develope by exp(pi*sqrt(163)) · · Score: 1

      'Flatus', that's a useful word. Anyway, I read a bit more at Wikipedia. I've always wondered about those nerve endings that can distinguish between flatus and solid material. What properties of the materials are used to distinguish between them. Are they detecting a mechanical or chemical difference? And what exactly causes the confusion associated with...OK...that's enough for now... -- Dan

      --
      Doesn't it make you feel good to know that our freedoms are protected by politicans, lawyers and journalists.
    16. Re:sense of smell first to develope by lashi · · Score: 1
      Now this one is easy, it's all in our mind. We think we farted therefore we are not grossed out. If you, say, bottle it up for a day and smell it without realizing it's our own, I am sure you would throw up. ROFL.

      This thread is reminding me of a new word I learned from a recent confession on my anon confession website, Cropdusting - fart while walking around the cube farm. see http://www.sayitt.com/i-fart-at-work

      ---------

      say what's on your mind - online confession or send anon email @ my website http://www.sayitt.com/

  10. A dog is a million times better by 192939495969798999 · · Score: 1

    I've heard that a dog's sense of smell is a million times better than ours, and that they can detect a scent trail 3 weeks old. I'm pretty sure that if humans could really do that, we wouldn't need dogs to do it... not to mention that dogs don't seem to mind if they sniff something gross on the way!

    --
    stuff |
    1. Re:A dog is a million times better by sbaker · · Score: 4, Informative

      In the NPR interview with the guys who ran the study, they said that it seemed that the only limit on the speed that practiced humans could track the scent was the speed they could crawl with their noses that close to the ground. That makes sense - I mean you can't crawl along with your nose literally in the grass at any kind of speed at all. A dog is able to run at full speed with it's nose just inches from the ground - and it's eyes are placed so it can still be looking forward as it does it.

      So this may have nothing whatever to do with the sensitivity of our sense of smell and more to do with the shape of our head, neck and the length of our fore-limbs.

      We mostly evolved to use our sense of smell for detecting whether food has gone bad or not - and for that, having nostrils right above our mouths is plenty good enough.

      Dogs are evolved to track prey and find carrion - they need to be able to sniff and run at the same time.

      Dog's noses are very impressive...it's incredible to see the kinds of tricks they can manage. But I wonder where that statement of "a million times more sensitive than humans" comes from - I bet it's something some journalist guessed at 100 years ago that we are all passing on as if it were the definitive answer. This study suggests to me that some simple practicing could narrow that gap considerably.

      --
      www.sjbaker.org
    2. Re:A dog is a million times better by khallow · · Score: 1

      There are already highly trained human noses already out there and not all dog noses have the same degree of sensitivity. My take is that bloodhounds and other breeds with extremely sensitive sense of smell are indeed at least that much more sensitive than trained human noses. I've heard of some incredible feats involving detection of odors orders of magnitude below the threshhold concentration that human smellers could achieve. It's definitely not just that they can crawl faster than we can.

    3. Re:A dog is a million times better by Bertie · · Score: 1

      A dog's sense of smell is a million times better? I don't believe that for a second. Wny, my dog doesn't even know a claret from a burgundy...

    4. Re:A dog is a million times better by 192939495969798999 · · Score: 1

      doesn't know or doesn't care? I bet the dog can smell the difference but would eat peanut butter as soon as jelly...

      --
      stuff |
    5. Re:A dog is a million times better by corbettw · · Score: 4, Funny

      There are already highly trained human noses already out there

      For example, experienced sommeliers and cheesemongers probably have even more fined tuned senses of smell (at least within their areas of expertise) than most pet dogs. Not blood hounds, mind you, but especially sight hounds and working dogs. Being able to identify ten or twelve different aromas and tastes within one glass of wine is a distinct skill, and I doubt many dogs can do it.

      At least, I know mine can't. But then, he can be a mean drunk, so maybe that's the real problem.

      --
      God invented whiskey so the Irish would not rule the world.
    6. Re:A dog is a million times better by Suidae · · Score: 1

      But I wonder where that statement of "a million times more sensitive than humans" comes from - I bet it's something some journalist guessed at 100 years ago that we are all passing on as if it were the definitive answer.

      Journalist: ... and this dog's nose is ten times better than a human's.
      Journalist's Assistant: aside ::scoffs:: more like a hundred times.
      Journalist: Ok, ... and this dog's nose is a HUNDRED times better than a human's.
      Assistant: ::scoffs:: more like a THOUSAND times better.
      Journalist: exasperated Ok, where are we going with this?

    7. Re:A dog is a million times better by Mr.+Underbridge · · Score: 1

      In the NPR interview with the guys who ran the study, they said that it seemed that the only limit on the speed that practiced humans could track the scent was the speed they could crawl with their noses that close to the ground. That makes sense - I mean you can't crawl along with your nose literally in the grass at any kind of speed at all. A dog is able to run at full speed with it's nose just inches from the ground - and it's eyes are placed so it can still be looking forward as it does it.

      Well, for a strong scent, true. Near the limit of detection ( for humans), a person will repeatedly lose the scent whereas a dog won't. Eventually the person doesn't even pick it whereas the dog has no problem.

      Dog's noses are very impressive...it's incredible to see the kinds of tricks they can manage. But I wonder where that statement of "a million times more sensitive than humans" comes from - I bet it's something some journalist guessed at 100 years ago that we are all passing on as if it were the definitive answer. This study suggests to me that some simple practicing could narrow that gap considerably.

      Nope, those numbers come from limits of detection studies typically, and dogs kick our asses. Practicing won't get you close. I've seen numbers on LOD with dogs vs humans for detection of various chemicals. They always win.

      For what it's worth, our research group worked with these guys a few years back on a multi-university project. Very cool stuff, but definitely not new.

    8. Re:A dog is a million times better by mlu035 · · Score: 1

      Dogs are evolved to track prey and find carrion - they need to be able to sniff and run at the same time.

      Dog's noses are very impressive...it's incredible to see the kinds of tricks they can manage. But I wonder where that statement of "a million times more sensitive than humans"


      Dog's noses are impressive - my Springer Spaniel, whilst being trained by a very experienced Game shooter and farm estate manager (my father-in-law, with 2 gun dogs of his own) managed the following: Whilst walking round a random wood (that the dog had never visited before) in Hampshire (UK), my father-in-law had just grabbed a branch of a tree off the dog, that the dog had only just that moment picked up. Said father-in-law decided to do a test, he threw the log deep into the woods and told the dog to retrieve it. Dog lollops off to retrieve said branch. Father-in-law and my partner walk off leaving the dog to find the branch. Thirty minutes later, dog turns up right next to them, having smelled them out, and holding aforementioned branch in his mouth. In a wood, in Hampshire, in a different county to the dog's normal home, in a wood he'd never visited before. Awesome. Nowadays he just thinks his reflection in the tv screen is another dog. Stupid dog :-)

      --
      "Feel the force, mother fucker." (Shaft Windu)
    9. Re:A dog is a million times better by TheLink · · Score: 1

      Well dogs (at least some) can be trained to detect cancer from scent.

      And also detect whether landmines are in an area from air samples collected from various areas and shipped to where the dog is.

      Some can even smell corpses that are deep underwater, from sniffing over the water on a boat.

      If there's actually a scent there's a good chance the dog can detect it.

      I think the problems usually are:

      1) Figuring out how to explain to the dog what you want. It's like a blind man trying to get a sighted person to find something when they both don't really speak the same language. An untrained dog could be thinking "uh follow which trail? There are 300 arthropod trails, 40 rodent trails, 25 cat trails, 10 dog trails ( 3 hot bitches too ), 5 human trails". A trained dog probably knows better - the humans are more likely to want the dog to follow human trails. Even if you give the dog a sample object with a scent to follow - it could have lots of different scents on it.

      2) The dog gets bored/tired after a while.

      --
  11. Maradona's nose by extern_void · · Score: 3, Funny

    Maradona has proved it many times some years ago keeping track of some white dust...

  12. We Smell in Stereo by Ranger · · Score: 4, Interesting

    I heard about this on NPR yesterday. The researcher said we smelled in stereo. They proved it by plugging up one nostril at a time and then attaching a device so that both nostrils could smell in mono. The test subjects took far longer to find stuff. He also said one people got attuned to smelling a trail they were limited to the speed at which they could crawl.

    Richard Feynman did a number of smell experiments with his first wife, Arlene. He would leave the room and she would handle bottles and books then he'd return and see if he could determine which ones she'd touched. He was able to find them. It's detailed in Surely Your Joking, Mr. Feynman .

    There! And I didn't make any smelling cracks about misunderestimating or Uranus or "once you get past the smell it tastes all right".

    --
    "You'll get nothing, and you'll like it!"
    1. Re:We Smell in Stereo by silentounce · · Score: 1

      I heard that as well. They also said that the results were intriguing because the humans did fairly well on the first try. Although dogs could do it much faster, they've been sniffing trails since birth. It'd be interesting to think how good humans could be at this sort of thing if enough effort and training was put into it. And joking aside, I wonder if Helen Keller would be better at this than the average person.

      --
      There are many tongues to talk, and but few heads to think. -Victor Hugo
    2. Re:We Smell in Stereo by Reziac · · Score: 2, Interesting

      I've always had a good nose, as humans go (and an extremely discerning sense of taste, which is closely related). Much better than the average cat, and a little better than the average toy dog. Not nearly as good as my gundogs, but I can still sometimes find a shot bird (or a plastic bumper), in cover, by scent alone. I can often find stuff dropped or tracked onto the floor by scent, without having to get down to floor level to do it.

      Dogs have to learn to use their scenting ability too, and the more native ability they have, the faster they learn to use it. Most toy dogs never learn to really use their noses, nor do many cats, even when they have need (frex, outdoor cats that have to hunt their dinner). It's rather like how someone who is naturally good at math learns higher math much more readily than someone who starts off with no inherent grok of math.

      Smoking, or living in a smoking household, will kill your scenting ability in a hurry. I've noticed that Cajun-spiced food does the same thing, so delicious as it is, I don't eat it.

      I never thought of scenting as "stereo" but should have, since scents are typically "directional"... you can tell what angle they're at and about how far away, rather like you would with sight or hearing.

      --
      ~REZ~ #43301. Who'd fake being me anyway?
    3. Re:We Smell in Stereo by ToxikFetus · · Score: 1
      I wonder if Helen Keller would be better at this than the average person.

      Has the olfactory system of zombies ever been properly mapped out? Empirical evidence (i.e. horror movies) indicates that zombies navigate by touch (the straight-armed shuffle) or echolocation (Braaaiiinnnsss...), rather than smell.
    4. Re:We Smell in Stereo by Ranger · · Score: 1
      I wonder if Helen Keller would be better at this than the average person.
      I would imagine that her other senses would've compensated: smell,touch, taste. It would be interesting to see an MRI of such a person to see which areas of the brain are more active than a normal person's.
      --
      "You'll get nothing, and you'll like it!"
    5. Re:We Smell in Stereo by Anonymous Coward · · Score: 0

      There! And I didn't make any smelling cracks about misunderestimating or Uranus or "once you get past the smell it tastes all right". You said smelling cracks! Huh huh huh....
    6. Re:We Smell in Stereo by seaalnose · · Score: 1

      Feynmann's test with detecting which books and bottles were handled by his wife was replicated more recently by Bill Clinton, who could detect which cigars had been, um, handled by Ms. Lewinsky.

  13. Easy by MyLongNickName · · Score: 3, Funny

    How do you think I find my way to the computer science classroom?

    --
    See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
  14. Let me think here... by CODiNE · · Score: 1

    Would I rather hold a leash and follow a dog around, or put my own face in the wet muddy grass? Hmmmmmm...

    --
    Cwm, fjord-bank glyphs vext quiz
    1. Re:Let me think here... by Ingolfke · · Score: 1

      I agree... but please, for Bob Barker's sake, spay or neuter your pets.

  15. Was it a fair experiment? by Trillan · · Score: 1

    By the end, I'm sure the participants were drooling. Did they get to eat the chocolate?

  16. They may have a better sense of smell... by Joebert · · Score: 1

    ... but we're still smart enough to get out of the room when we hear, "the noise".

    --
    Wanna fight ? Bend over, stick your head up your ass, and fight for air.
  17. Stereo smell. by sbaker · · Score: 4, Insightful

    It's not evident from the slash summary - but one interesting discovery is that we actually smell in stereo - hence two nostrils.

    That comes as a surprise to me - our other stereo sense organs (eyes and ears) are placed just about as far apart on our heads as is structurally possible - but our nostrils are really close together. OK - we don't have a really great sense of smell and we don't rely on it at all - but dogs clearly do - and their nostrils are also very close together.

    You'd think we (or at least dogs) would have nostrils mounted just below our ears.

    Weird.

    --
    www.sjbaker.org
    1. Re:Stereo smell. by DaleBob · · Score: 1

      Perhaps it suggests that the sense of smell is sensitive to even extremely small concentration gradients, in which case a close spacing would enable greater positional accuracy.

      Word.

    2. Re:Stereo smell. by ceoyoyo · · Score: 2, Insightful

      It's important for us (well, dogs anyway) to be able to get our noses close to the scent trail to pick up faint scents, so our nostrils have to stick out in front. Think of a line following robot -- it's best to have two sensors, separated a little, but not by all that much.

    3. Re:Stereo smell. by jd · · Score: 2, Interesting
      My guess would be that scent travels so slowly that stereo is not obtained from time displacement but from concentration difference, and that concentration differences are better calculated by having the nostrils directional than physically displaced. Physical displacement requires much more wiring and piping, and the payoff probably isn't worth the extra cost for a sense of smell.


      I'm curious if the researchers produced CFD models of different types of nose to compare the mechanics of different nose structures against the ability of those same nose structures to give stereo information, etc. I somehow doubt it - I'm begininning to be rather skeptical over the ability of researchers to actually study something as opposed to merely report on it - but this is the sort of information that would allow the results to be understood and interpreted in context. It would also be good if modern brain activity imaging could be used to see what the brain actually does TO interpret scent in stereo. How is the information correlated, and what with? Obviously, imaging is too expensive to do on a first-round study that sounds like it was more a recreational piece of research than something anyone expected to get real results from.


      As it stands, we know that a result occurs without knowing actually knowing a whole lot about what happens, why, how or even when. (There's a huge time lag between when the data is collected and when the person acts on it.) A result is good, but when that's all you have, it's no more science than alchemy or spell-casting, and without quantifiable data, is not really any more repeatable. We've moved on past the stone circles and ritual magic - at least, I hope so. It would seriously make a mess of the server room if they started ripping out guts there in Druid rituals.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    4. Re:Stereo smell. by lawpoop · · Score: 4, Interesting

      ... our other stereo sense organs (eyes and ears) are placed just about as far apart on our heads as is structurally possible"

      For our eyes, that's not really true. Our eyes are placed slightly apart, looking forward so that their respective fields of vision overlap each other. Then our brain calculates how far away objects are from us by noticing how much inward each eye has to rotate to hold the object in focus.

      Prey animals, like deer and cows for example, have eyes mounted on totally opposite sides of their heads, like our ears. Each of their eyes sees an almost complete separate image. Their total field of vision is almost 300 degrees. Owls are predators par excellance, and have stereoscopic ears set just below their eyes. Their entire face is bowl-shaped like a radar dish.

      So, if we evolved solely as prey animals, we probably would have eyes on the sides of our heads, near our ears. If we evolved solely as hunters, we would probably have forward facing ears that we could rotate, like cats or wild dogs. There is some debate, but some anthropologists argue that our forward-facing eyes and stereoscopic vision comes from having to navigate in trees. This is also backed up by the fact that we have 3-color vision, which you need to see ripe fruit, where as hunters like cats and dogs see in black and white. There are vegetarian, tree-dwelling monkeys that have forward-facing eyes, stereoscopic vision, and have 3-color vision*.

      It is interesting that smell, if it is truly a stereo sense, would have both nostrils so close together. Maybe that's because light and sound waves don't get mixed up as much as scents on the wind, so each input would be very different. Also, smell seems to be a short-range sense, whereas sight and sound are long-distance senses. I don't mean that prey animals don't smell things far away, but it's not as usefully accurate as long-distance hearing or vision. If you're relying on smell to tell you when things are sneaking up on you, it will probably be too late by the time you really get a good whiff. A sound or a sight really tells you where they are, and which direction you need to run in. My guess would be that the stereoscopy of smell would be useful when you are examining something up close, such as a plant or carcass.

      *By 3-color vision, I mean that we have specific receptors cell in our eyes for 3 discrete wavelengths of light -- red, green, and blue. Some birds, for instance, have four.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    5. Re:Stereo smell. by argStyopa · · Score: 1

      There are a few different things at work here.

      1) the distance between stereo receptors is significant in an inverse relationship to the sensitivity of an individual receptor. Our eyes can only use parallax to determine depth perception because of the (relative) imprecision of our visual field. If our brain could resolve fine details in the visual field better, that 3" between the eyes would be enough distance to resolve parallax out to 50 yards, for example.

      2) further, the comparison eyes/nostrils isn't quite accurate. Eyes can tell direction, while the sense of smell of a single nostril is (AFAIK) purely scalar. If two sensors are scalar, then it's possible that having them closely together would help to detect fainter stimuli, at a cost of some ability to resolve direction. Since the nose (and I'm thinking about a tracking dog here) can be relatively easily waved about to define the strength(s) of a smell-field, maybe the advantages in detection capability are worth the tradeoff, or were at one time.

      --
      -Styopa
    6. Re:Stereo smell. by roman_mir · · Score: 2, Interesting

      Your nose, which is right about your mouth is a very important instrument, which prevents you from even trying to put certain things in your mouth that could make you sick or kill you even, so it better be above your mouth and not behind your ears.

    7. Re:Stereo smell. by Bent+Mind · · Score: 1

      If you're relying on smell to tell you when things are sneaking up on you, it will probably be too late by the time you really get a good whiff.

      Deer often use smell as a warning. However, it just spooks them. Once they smell you, they use sound and sight to run. Wind can carry smell quite a distance.

      --
      Request a Linux Shockwave player here: http://www.macromedia.com/support/email/wishform/
    8. Re:Stereo smell. by sh3l1 · · Score: 1

      I disagree, if nostrils were mounted on either side of the head, the respiratory system would be significantly slowed, and we would not be able to smell something by sticking our nose in front of it. We would have to turn our head and lower our head much more.

      --
      Help Me! I'm trapped in the tubes! Oh noes! Here comes a internet!
    9. Re:Stereo smell. by An+anonymous+Frank · · Score: 2, Interesting

      Also worthy of note:

      Try and taste anything if you've got you're nostrils blocked!

    10. Re:Stereo smell. by cain · · Score: 1
      Prey animals, like deer and cows for example...

      Smithers! Release the cows!

    11. Re:Stereo smell. by egomaniac · · Score: 1

      This is also backed up by the fact that we have 3-color vision, which you need to see ripe fruit, where as hunters like cats and dogs see in black and white.

      This is a common misconception, but false. Most mammals are dichromats: they have two different color receptors, with peak sensitivity at green and blue wavelengths. We have three, with peak sensitivity at yellow, green, and blue (the yellow receptor is commonly referred to as "red" because it is the only receptor capable of responding to long wavelengths and therefore essential for the perception of the color red, but it's actually most sensitive to yellow).

      So most mammals are color blind in the same sense that the average color-blind person is -- they have reduced color discrimination relative to us, but that doesn't mean they see in black and white.

      --
      ZFS: because love is never having to say fsck
    12. Re:Stereo smell. by notjim · · Score: 1

      . . . Some birds, for instance, have four. 16% of women in fact: http://www.youhaventlived.com/qblog/2006/QBlog0105 06A.html
  18. Following scent trail? My mom did it! by 140Mandak262Jamuna · · Score: 4, Interesting
    Well, in Indian cuisine, especially the South Indian cuisine there is a foul smelling spice (!?) named asafoitida which is very popular. The root for asafoitida is foetid meaning foul smelling. It actually figures as a major mystery smell in a Agatha Christie story.

    When I was young I used to hate that stuff, especially because my mom would throw blocks of it in the curries without powdering them. One bite of that chunk, and you will curse everyone in sight. So enraged I was, that I once stole her entire stash of asafoitida. I wanted to throw it away in garbage, but I was young and scared and did not dare throw it all away. So I hid it in a trunk in the loft. And, yes as I said in the subject line, my mom sniffed it out and found the stash. So yes, humans can sniff out very aromatic substances. But faint traces like a dogs do [note the significant absence of the apostrophe after the s in dogs] ? I am not so sure.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
    1. Re:Following scent trail? My mom did it! by khallow · · Score: 1

      I'd phrase that as either "like a dog does" or "like dogs do".

      I gather the real significance is that the test subjects can figure out with a sniff whether they're on the right or left side of a scent trail. The story doesn't seem to be about finding a stationary odor or detecting faint scents.
    2. Re:Following scent trail? My mom did it! by Sardaukar86 · · Score: 1

      >But faint traces like a dogs do [note the significant absence of the apostrophe after the s in dogs]

      Correct spelling, proper use of grammar *AND* a demonstration of robust apostrophe fu..?

      You must be new here.

      --
      ..Mullah or Pope, Preacher or Poet, who was it wrote: "Give any one species too much rope and they'll fuck it up"?
  19. Not all humans can by Zontar_Thing_From_Ve · · Score: 5, Interesting

    Benjamin Long writes to note a study, by a team of neuroscientists and engineers, that demonstrated that humans can follow a scent trail

    My first job after graduating from college was working as a computer programmer at a US Air Force base. I worked in the main building for our section of the base and our colonel one day was having a VIP come by to visit him. He walked out to the main area and smelled something burning. Convinced that his canine sense of smell had saved the day and wanting to show off for his visitor, he promptly called the base fire department and demanded that they send a truck out to investigate "the burning wires smoldering within one of the walls". The base fire department dispatched a truck and the firemen investigated and told the colonel that what he smelled was burnt popcorn from the break room and there was nothing smoldering within the walls. The colonel then did the only thing that a military man who has just embarassed himself could do. He promptly banned microwave popcorn.

    1. Re:Not all humans can by hey! · · Score: 2, Interesting

      My dad was a professional chef. A really good professional chef. Which means that unlike your colonel, he had a professionally trained sense of smell. If he was home, and you'd been out drinking or smoking pot, you were busted. You could rush from the door straight upstairs, and he'd smell it on you from his armchair, ten feet off your path.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
    2. Re:Not all humans can by Anonymous Coward · · Score: 0
      He promptly banned microwave popcorn.

      Good. That stuff smells nauseating.

    3. Re:Not all humans can by Rorschach1 · · Score: 1

      We must have had a better colonel than you. When we had an evacuation in the building (due to burning popcorn in the break room, oddly enough) the colonel was apparently the only one who remembered that the fire alarms didn't always work in the network control center, and made a sweep through to personally make sure we all got out. Didn't ban popcorn, either, though I'm sure he made sure whoever screwed up the machine was suitably embarrassed.

      Worse than the popcorn fire was the metal and plastic mug left in the microwave NOT 10 MINUTES after we'd come back in from the previous evacuation. Fortunately they hadn't even gotten around to rearming the alarm system or we'd have all been back out in the parking lot! Once the smoke had cleared it was actually kind of interesting to look at... sort of Starbucks meets Salvador Dali.

    4. Re:Not all humans can by Anonymous Coward · · Score: 0

      My dad was a professional chef. A really good professional chef.

      Was his name Steven Seagal by any chance?

  20. great, you'll know it was me by zesty42 · · Score: 1

    when I fart in your general direction.

    --
    the more miserable you are now, the funnier the story will be later
    1. Re:great, you'll know it was me by alexhard · · Score: 1

      when I fart in your general direction. Your father smelt of elderberries!
      --
      Infinite time means everything that can happen, will. You being you is absolutely incidental. You do not exist.
  21. Pictures by cheese-cube · · Score: 2, Funny
    The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail.

    Pictures pls.
    1. Re:Pictures by Ingolfke · · Score: 1

      Oh shit... another one you people with the blindfolded college student participating in a science experiment fetish. You people are sick.

  22. Feynman wrote about this in 1985 by ivar · · Score: 1

    In his collection of memoirs "Surely You're Joking, Mr. Feynman! (Adventures of a Curious Character)", Richard Feynmann wrote of hilarious events surrounding his experiments with his own ability to track scent trails. The story is called "Testing Bloodhounds". Man, that guy was ahead of his time for *everything*...

  23. This is the first published neuroscience research by Anonymous Coward · · Score: 0

    ...performed by a fraternity.

    Next year's research promises refinements in the LD50 of ethanol in fully-grown mammals.

  24. IIRC, Feynman mentions this by Anonymous Coward · · Score: 0

    I think it's somewhere in Surely You're Joking, Mr. Feynman where he mentions that he once got down on all fours and tried to track a scent like a bloodhound, with some success. Apparently the biggest single reason why dogs' noses work better than humans' is simpy that they are closer to the ground.

  25. Re:My Dog Has No Nose! by $RANDOMLUSER · · Score: 4, Funny

    A guy is on an elevator alone.
    A beautiful girl gets on.
    He says "Hey, can I smell your pussy?"
    She says "NO!".
    He says "Oh, must be your breath."

    --
    No folly is more costly than the folly of intolerant idealism. - Winston Churchill
  26. smell by Anonymous Coward · · Score: 5, Interesting

    when I quit smoking a few years back after having smoking since I was about 13 (and raised by two smokers) I recovered my sense of smell and taste (they are certainly intertwined)
    My sense's of taste and smell are so actute now - it's amazing! I can smell people smoking a few cars in front of me - peoples aftershave and perfumes are most times extreme and putrid (I believe it must be animal urine in them)
    The weirdest experience was the re-living of memories evoked through smell, that I had long forgotton. Apparently, smell is the sense most connected to memory, I literally feel younger than ever (36yrs old in reality) Now I can smell the deeper complexities within freshly cut grass that I had completely forgotton. Quit that damn cigarette - you really do get your life back (lots more money too)

    1. Re:smell by not-enough-info · · Score: 1

      peoples aftershave and perfumes are most times extreme and putrid (I believe it must be animal urine in them) Excuse me... is that 'sex panther' you're wearing?
      --
      ---k--
      </stupid>
    2. Re:smell by Acer500 · · Score: 1

      It's certainly an interesting story, but as a non-smoker I can't understand why you specifically mention being able to smell someone smoking a few cars in front of you - I was under the impression that most people could - and I don't find cigar smoke pleasant, nor think my smell sense is especially sharp, more on the dull side probably. And yes, I can smell freshly cut grass too.

      OTOH I have to be quite close to a person to smell the perfume usually.

      --
      There are three kinds of lies: lies, damned lies, and statistics.
  27. Dogs can't always track... by EmbeddedJanitor · · Score: 1

    The quality of scent trails depends on many factors including temperature, moisture and the terrain. Having been pig hunting with dogs, I've seen them being able to pick up a scent trail that was days old and only an hour or so later they could not track where a pig had walked only minutes ago. The first trail was in long grass and had been left in the morning with dew on the grass. The second was in the middle of the day over open ground.

    --
    Engineering is the art of compromise.
  28. Dosn't prove smell in stereo by addsalt · · Score: 2, Interesting

    In testing to see if humans smell in stereo the best experiment they could come up with is having people follow a piece of scented rope in the grass? All this experiment would prove is that people can smell. If you loose the sent you turn your head to the left or right and if the sent increases, you move in that direction. They went through the extra step of jamming things in people's noses and surprise, people didn't do so well with this teflon contraption hanging off their face.

  29. Much of common life destroys basic senses. by CherniyVolk · · Score: 5, Interesting


    One thing I noticed, during bootcamp was that my sense of smell became incredibly accute. While, I'll award the reader with the fact that I was a prior smoker to bootcamp, I will say that non-smokers DEFINATELY noticed the difference as well.

    While it's not likely we as a society will retort back to nature in a sense, I will say, the body naturally cleans itself and the only reason a "bum" stinks as bad as he does is in relation to all the non-natural environment surrounding him. Not only that, but we are so used to the man made scents, that natural scents tend to stand out even more.

    For example... while some city women will think a man from the country is being a sexist pig who treats women like objects... the fact is, men CAN smell women and from a considerable distance away.

    OK. Let me stress this, becuase this is when it hit me like a brick during boot camp. It was almost a "holy shit do I have a Marvel Comic superhero nose?", no I don't and you don't either. But, when at a club, a female can be practically touching you and you might smell her perfume. In the work place, a female sitting in the next cubicle might not make her presence known until she makes sufficient noise to catch your attention....

    After five weeks into boot camp, a female division walked past the barracks we were at, and walked up stairs. I would accurately judge the distance to about 50 feet away, and every single guy in the barracks literally smelled the girls. We didn't have to hear them. We didn't have to see them. We could smell them and knew they were there. The scents were distinguishable too, not just a generic feminine hormone release into the air. If two girls were in the next room, the guys three rooms down could smell two different scents.

    When I was a kid, females weren't allowed to go hunting, irregardless of what time of month or whatever they washed their bodies with. Until boot camp, I always thought it was a wives tale that women gave off that much odor... but I swear to you. Yes, if I am able to smell a female just as well as see her from 50 feet away... then a deer or buck with much better noses can certainly smell a human female from 100 yards away. A man could probably smell the presence of a female much further than 50 feet away, it's just that's the distance I know for a fact and even at 50 feet, the scent was unbelievably strong. How far away before it becomes a hint? The girl might as well have showered in perfume and stood two inches behind me.

    Nowadays, away from the lack of everyday luxuries and eminties, inhalation of cigarette smoke, car exhaust, overwhelming stench of plastics and asphalt... no, I couldn't tell you if a girl with no perfume is sitting five feet over in the next cubicle. It's somewhat sad. But, you are capable of doing it. Most people who go on long hunting trips in the wilderness know what I'm talking about. Without all this crap we deal with, this man made crap, nature gave us some pretty interesting abilities that have been long taken for granted or the use is nolonger really needed.

    The scent of the girls is what blew me away the most. So vivid, so strong so unexpected. But, I also realized that a lot of other things that might have been overlooked or not processed certainly was while in boot camp. Such as the bed of flowers outside the barracks... yeah, you can smell those things. In modern day life, much of those scents are still hitting our nose, but if they remain being processed it's either at a subconscious level or outright ignored altogether. Anyway, it doesn't surprise me that a group of college students was able to smell a trail of chocolate in the lawn. Doesn't surprise me one bit.

    1. Re:Much of common life destroys basic senses. by lawpoop · · Score: 4, Insightful

      Let me play devil's advocate -- can you be sure that a human male doesn't have as strong a scent as a human female? Maybe women in the women's barracks are able to smell a man when they are amongst only women just as well as you and the other guys are able to smell a woman. Maybe human males have specific receptors for whatever chemicals a human female secretes.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    2. Re:Much of common life destroys basic senses. by Anonymous Coward · · Score: 0

      Out of curiosity any ideas if the female soldiers had gained "enhanced" sent, and if they could smell differentiate the guys or would it remain a mystery cause asking the opposite sex that would be strange?

    3. Re:Much of common life destroys basic senses. by sh4na · · Score: 1, Insightful

      Oh please! Females can't go hunting because the animals might smell them, because you found out you can smell a woman after living exclusively with men for weeks? What do you think men smell like to women, of rosy pastel soft stuff? rofl! If anything, men leave behind stronger scents than women do. You know, all that testosterone stuff, it's a real pain. You wanna know something really interesting-like? Hunters hunt *against* the wind. How about that for shocker?

      Frankly, how you could turn your post from a genuine interesting human experience to a "heck, so *that's* why women are meant to stay at home! They smell!" thing just blows me away. Amazing. o0

      --
      shana
      ......gone crazy, back soon, leave message
    4. Re:Much of common life destroys basic senses. by Overzeetop · · Score: 1

      There are two problems with your story and the logic for hunting. First, you are naturally "tuned" to the scent of a female of your species. Other animals are not. Second, you were specifically deprived of any trace of that scent for an extended period of time. I would not be suprised that the nose works like the eyes in that a reduction of stimulus increases the sensitivity to future stimulus, at least on a temporary basis. The reason has to do with a buildup (and depletion) of the neurotransmitters, any detailed knowledge of which I have forgotten since walking out of my pshych classes nearly 20 years ago.

      I would not be suprised to find the women having a similar respose/awareness to men - and therefore men should not go on hunting trips either.

      As a similar effect, the ban on smoking in most places has made me far more sensitive to cigarette smoke, and I can smell a smoker several cars away (provided the vent/ac/heat is on) in standing traffic. There's really no magic to it.

      --
      Is it just my observation, or are there way too many stupid people in the world?
    5. Re:Much of common life destroys basic senses. by at_slashdot · · Score: 1

      Just as the other people I doubt females smell more then males, but otherwise I agree with you, I can smell women probably 10-20 feet away (50 is a little be too much, but if the wind blows directly towards me it's possible). I also associate smell with places and even feelings, more than sounds or views (for example if I visit a new city or country the first thing I notice is the different smell and that's what I usually remembers best when I return to a place) so maybe I'm a smell oriented guy.

      --
      "It is our choices, Harry, that show what we truly are, far more than our abilities." -- Prof. Dumbledore
    6. Re:Much of common life destroys basic senses. by raduf · · Score: 1


      Used to go to a japanese class in college. For some reason, it was extremely popular with girls, and since it was both optional and very hard the attendance was a lot higher in the beginning. Now, with 30-40 girls and 2 guys in a room for 20, god knows how many at their period, windows closed... yes, girls smell different. And, at least to me, much stronger then guys.

    7. Re:Much of common life destroys basic senses. by smoker2 · · Score: 1
      Males piss on things to mark their territory, they don't have to emit an odour constantly . Males also hunt so need to be inconspicuous. Males sniff the air to tell if a female is on heat. Females don't have to smell males because the males seek them out, and they also don't have to worry about steering clear of a males territory. Females of any animal species smell more than the males, by design.

      Maybe we should get on to the fact that if you have several women living together in close proximity, pretty soon their periods synchronise. Oooh, animal behaviour - it's so *bohemian*.

      I'm pretty sure that all mammal species share the same kind of hormones, so if you take a menstruating woman out hunting then any mammal in the area is going to smell her before they smell a male.

      Of course if you had ever spent any time near animals then you would know this. (and no, tibbles doesn't count, his smell is overpowered by yours, unless you left his nutz on of course)

    8. Re:Much of common life destroys basic senses. by mlu035 · · Score: 2

      Let me play devil's advocate -- can you be sure that a human male doesn't have as strong a scent as a human female?

      Only on slashdot could someone wonder if a woman doesn't smell stronger than a man in any way. Haven't ANY of you guys been near a woman's lower half recently...I am not saying they smell bad (far from it when looked after properly - any ladies reading this, don't use soap!), just emit a strong odour (no, I'm not American, thus I can spell odour correctly) - which is a bit of a give-away if an animal happens to catch a whiff...sheesh. Stop posting on slashdot, clean up, go to a bar, talk to a woman, and she might let you get your nose near enough to know what some posters on here are on about.

      --
      "Feel the force, mother fucker." (Shaft Windu)
    9. Re:Much of common life destroys basic senses. by lawpoop · · Score: 4, Informative

      All of what you said is contradicted by basic primatology. We are not deer. We are great apes.

      Great apes do not mark their territory with piss or pheromones. Great apes live in groups, so they don't need to smell each other to find each other -- they wake up with each other every morning, and go to sleep next to each other every night. They are all right in front of each other's faces.

      Great apes attract and find mates based on vision, not smell. Have you ever seen a female chimp in heat? I have. Her hind end swells up to the size of a human buttocks. Here's a picture. With baboons, the labia become swollen and cherry-red. It looks like the mother of all veneral diseases.

      This is true for out closest relatives -- gorillas, chimpanzees, orangutans, and bonobos. Sure, guys might be attracted to the scent of a woman, but what really gives you a boner is the sight of sexually mature breasts or a mature female butt with the wide hips. Porn is images, not smells.

      When a human female menstruates, she is not leaking 'hormones'. It's not a stream of estrogen. The reason it's so exciting to wild animals is because she is bleeding and shedding endometrium tissue, and the animals are smelling blood.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    10. Re:Much of common life destroys basic senses. by yarbo · · Score: 1

      In my experience, I can only smell a woman's "lower half" if she's aroused. I can do this even if she's still clothed and my face isn't between her legs. The odd thing is, I generally have a weak sense of smell. I have to have my roommates smell my leftovers to tell me if it went bad, for example.

  30. Great. by Anonymous Coward · · Score: 0

    As if we need another reason for women to tell us that men are dogs.

  31. Wait a minute. by Jethro · · Score: 2, Funny

    The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail.

    Sure... "researchers".

    This is one of those weird Japanese game shows!

    --


    In the land of the blind, the one-eyed man is kinky.
  32. I was reading a book called by multiplexo · · Score: 5, Interesting

    Crystal Fire and they had an interesting anecdote about the beginnings of semi-conductor research. In the late 1930's early 1940s the scientists at Bell labs were experimenting with silicon to see if they could build rectifiers and other electronic components out of it. At the time there really wasn't any theory about how these things might have worked. Some silicon rods showed semi-conductive behavior, some didn't. Finally they found one rod that showed strong semi-conductive behavior. They couldn't figure out what it was that made this rod special until the scientists and machinist who worked on it said that when it was cut or ground it gave off the same smell as one of the old carbide lamps that were used on many automobiles until the late 1920s. One of the chemists realized that what they were smelling was trace amounts of phospine gas, which meant that the rod has phosphorous in it. This was a surprise as the levels of phosphorous in the sample were so small that they didn't show up in a spectrographic analysis, it was the noses of the scientists and machinist that gave them the clue that the proper trace impurities in silicon would enhance the semi-conductive behavior.

    --
    cheap labor conservatives - they want to keep you hungry enough to be thankful for minimum wage.
  33. Taste == smell by lawpoop · · Score: 1, Informative

    When we talk about our sense of taste in everyday conversation, what we are really talking about is our sense of smell.

    The taste buds on our tongue have only four types of receptors: salt, sweet, sour, and bitter. Each has a specific region on the tongue -- for instance, bitter is on the back of the tongue.

    All of the other qualities of food that we normally ascribe to taste are actually olfactory stimuli. When food is in our mouth, some of it wafts back up into our nose, where our most sensitive smelling tissue lies. This sensation is what we are referring to when we talk about the particular taste of chocolate, coffee, oranges, wine, etc. -- aside from their sweet, sour, salty or bitter qualities.

    In humans, this sensitive smelling tissue lies inside the face behind the nose, in the nasal canal. In dogs, it's the wet tissue that makes up the surface of their nose. That's why dogs' sense of smell seems so much better than ours -- they are basically tasting the air and everything they get close to with their nose. You can smell about as well as a dog can, if you stick things in your mouth. But given what dogs are mostly interested in smelling, who would want to?

    --
    Computers are useless. They can only give you answers.
    -- Pablo Picasso
    1. Re:Taste == smell by Politburo · · Score: 3, Informative

      Wrong.

      The "tongue map" is a myth, and there is a fifth sensor, "unami" (MSG), and possibly a sixth for fats.

    2. Re:Taste == smell by lawpoop · · Score: 1

      Which parts specifically are wrong? The mapping and the four 'tastes'? Or the whole thing entirely?

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    3. Re:Taste == smell by evilviper · · Score: 1
      Nothing you've said even passes the laugh test.

      You can smell about as well as a dog can, if you stick things in your mouth.

      So plugging your nose, and breathing through your mouth makes odors STRONGER in your imaginary world?

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
    4. Re:Taste == smell by lawpoop · · Score: 1

      No, if you were to take the thing that the dog sniffs at and put it in your mouth, *that* is what the dog smells. Basically, our keenest sense of smell is internal, inside of our face, and really only works on things we place in our mouths, whereas dogs' keenest sense of smell is the wet, scaly skin on their nose.

      It's the difference between sniffing a cup of coffee and tasting it in your mouth. When you have the coffee liquid sloshing around in your mouth, all of its coffee 'flavor' beyond the basic bitterness is actually sensed by your sense of *smell*. When the dog pokes its nose at the coffee, it's as strong as if the dog were tasting it. To put it another way, they have their sense of taste on the end of their wet noses.

      This is demonstrated by people who have lost their sense of smell, called Anosmia. Not only have they lost the ability to smell things by sniffing, but they have lost all ability to taste the flavor of things. Wikipedia says this:

      "It should be emphasized that there are no more than 6 distinctive tastes: salty, sour, sweet, bitter, umami and possibly fatty acids. The 10,000 different scents which humans usually recognize as 'tastes' are often actually 'flavor', which many people who can smell confuse with taste."

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    5. Re:Taste == smell by Brian+Boitano · · Score: 1

      Note that's FATS, and not FARTS. :p

      --
      What would Brian Boitano do?
    6. Re:Taste == smell by evilviper · · Score: 1
      No, if you were to take the thing that the dog sniffs at and put it in your mouth, *that* is what the dog smells.

      That's just fine... No problem... I'll believe that...

      The problem is, you said: "You can smell about as well as a dog can," suggesting something like a 100X improvement in the human sense of smell, when accessed via your mouth.

      --
      Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
    7. Re:Taste == smell by lawpoop · · Score: 1

      "The problem is, you said: "You can smell about as well as a dog can," suggesting something like a 100X improvement in the human sense of smell, when accessed via your mouth."

      Why is that a problem? That's basically the facts as we understand them now. We *can* smell as well as a dog can. It's just for that the longest time, what we thought was taste was actually our sense of smell.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    8. Re:Taste == smell by Morkano · · Score: 1

      The map is wrong, you can detect the five tastes all over your tongue, not just in certain regions. You can see for yourself if you're particularly interested, just drop some grains of salt or sugar in different places on your tongue.

      --
      Victory or awesome!
    9. Re:Taste == smell by lawpoop · · Score: 1

      I read the wikipedia link that said that it was wrong. But as far as the experiment you suggest, what would convince a skeptic that any salt or sugar you place on your tongue isn't just rapidly dissolving into the saliva and spreading out over to the salt/sweet receptors?

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
  34. LawL by SuperStretchy · · Score: 1

    The researchers blindfolded college students who crawled through grass to sniff out a chocolate-scented trail.

    I would have loved to see that. Its a funny mental picture.

    1. Re:LawL by daverabbitz · · Score: 1

      Would of worked better with beer...

      --
      What could be better than a jet powered motorcycle? http://www.youtube.com/watch?v=u8l6GTHLSWE
  35. Agree no surprises. Richard Feynman documented it by Anonymous Coward · · Score: 5, Interesting

    Richard Feynman (famous caltech physicist) documented his observations of this in his autobiography too; where he demonstrated for friends that he could smell out recently handled books in a book case.

    Many people who suspect their spouses of affairs also observe this ability too (knowing in which rooms a guest's been in).

    This shouldn't be a surprise to anyone; and it's pretty sad that the obvious gets passed as new, novel research.

  36. and on his free time... by paulpach · · Score: 1

    When the researcher is not following a trail, he spends his time sniffing butts at a local bar.

  37. Chocohounds by Doc+Ruby · · Score: 1

    Chocolate is a relatively recent invention (bred by South/Western "Mexican" Gulf coasters in the last thousand or so years). And not essential to human survival - though some menstruating women would kill me for saying so.

    I wonder what results they'd get with oils from oranges or other citrus fruits. Which humans evolved with, along with our sense of smell, and depend upon for survival (unlike most animals, we don't synthesize vitamin C).

    And I'd like to see the differential results for chocolate sniffing sorted by gender, and by menstrual phase for females.

    --

    --
    make install -not war

  38. Dwayne Johnson says... by Itninja · · Score: 1

    Yes, but can they smell what the Rock is cookin'?

    --
    I judt got a nre Kinesis keybiartf so please excusr ant egregiou typos.
  39. Old news by OpenSourced · · Score: 1

    a team of neuroscientists and engineers, that demonstrated that humans can follow a scent trail

    This team of neuroscientists obviouly never watched my uncle navigating the house floor to unfailingly reach the turkey leftovers, or they wouldn't be losing their time doing silly experiments.

    --
    Rome taught me patience and assiduous application to detail. Virtues which temper the boldness of great, general views.
  40. A message to you, human animal by gd23ka · · Score: 1

    Hey furless freak

    I just scent marked your pillow. Can you tell my fertility state?

    1. Re:A message to you, human animal by Ingolfke · · Score: 1

      Unfortunately my sense of smell isn't that good... but my powers of deduction are nearly perfect. It's quite obvious from your post that your a flacid blank-shooting loser. That must suck.

  41. Anyone else have flashbacks. . . by smooth+wombat · · Score: 1

    to the movie, "The Animal" with Rob Schneider?

    At least Colleen Haskell would be worth trying to track with your nose.

    --
    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  42. Feynman tried this by Ambitwistor · · Score: 1

    The physicist Richard Feynman described in his autobiography his own personal "human bloodhound" experiments. He found that, with little training, he could identify by smell which of a collection of objects had been recently handled. However, upon getting down on the floor and sniffing around, he determined that, unlike his dog, he couldn't follow people's tracks by their scent.

  43. We've known about scent-sensitivity for years by smellsofbikes · · Score: 1

    But a lot of it is subconscious.
    Google "human ovulation smell" or scent or whatever. (That should be relatively worksafe, as opposed to, say "sniffing panties" which is how the original research was done, AFAIK.)
    Here's a recent article about how men can tell when women are ovulating.
    Here's a lit review from 2001, discussing just how good humans are at detecting pheromones, unconsciously.
    (I can't help but wonder what 'subconscious' means in this sense: if you smell vomit and want desperately to leave the airplane, is that subconscious? is a dog smelling my hamburger and coming over to say hi subconscious? there are lots of areas where behavior is affected by things that a person might not be fully aware of, but if asked might be able to remember -- is that conscious? For instance, when I'm riding my bike down the path and see someone walking along talking to nobody, is it a crazy person or is it a person that's talking on a cellphone? I mostly determine that by some intuitive sense about how the person is moving: lurching around, uncoordinated movement -- but I don't *think* about it. I just know. But afterwards, I have a conscious realization: that person {is|isn't} crazy. Read "Blink" by Malcolm Gladwell for more about that.)

    Anyway, there have been studies done since the '70's, IIRC, exploring how good humans are at smelling things: slow, but still very good.

    --
    Nostalgia's not what it used to be.
  44. Fish by Anonymous Coward · · Score: 1, Funny

    On the flip side most men are able to scent track women so I guess there's balance in nature.

    Men can also scent track fish.... suppose those two scent tracking skills are related?

    1. Re:Fish by Anonymous Coward · · Score: 0

      I know what you're getting at, and it's gross. Last time I tasted a fishy puss, I told the girl to get the fuck out of my bed.

      I like 'em sweet, and I won't settle for less.

  45. Your story is entirely made up by Latent+Heat · · Score: 1

    Your story is entirely made up based on your fellow techs not wanting to talk to you. If it was real, they would be saying, "Why didn't I think of that!"

  46. EGADS!!! by StressGuy · · Score: 1

    I'd like to see the results sorted by gender including menstrual phase for males. I mean, based upon your post, it seems like it might just be a survival instinct for the males to find chocolate for their menstrating wives...

    --
    A goal is a dream with a deadline
  47. Re:Should we be surprised? by Ingolfke · · Score: 1

    I think I might agree with you. After reading your post it's obvious that the only difference between you and a dog is that a dog doesn't have the sophistication to come up with some type of argument for why it sniffs it's own ass and licks its balls. Bravo my animal friend... bravo.

  48. smell is swell by swell · · Score: 1



    Smell is swell. It's so sad that people, especially adults, don't take time to enjoy it. There is a good reason, of course. We ignore odor because we have no way to quantify or qualify it. If it represents danger (fire, etc) we respond as best we can, but there is no way to express what we experience.

    When we experience colors, for instance, we reach back to a lifetime of shared experiences beginning in pre-school. In the company of others we learned and eventually agreed upon what yellow was about. And red, green, etc. There are some delicate shades of color that we haven't shared with others and we feel doubt about what they should be called. We tend to ignore those colors, particularly in conversations, for fear of ridicule. The truly techy among us may refer to them by their Pantone numbers.

    We need a language for describing odors that goes beyond "oh that really stinks!". Wine sniffers have tried for generations to do so, but their effort is more about being trendy than creating a standard for comparison.

    Without that language, there isn't much incentive to pick out interesting odors in the envirnment. How would you share them with other sensitive people? So, the scents drift by and something in the back of your mind says 'that's nice', but you are too busy talking on your cell phone to notice.

    There are some technical and observant books on the subject, such as "The Nose: A Profile of Sex, Beauty, and Survival" by Gabrielle Glaser, but the best way to dramatize the value and potential of recognizing scent is to read the novel "Perfume: The Story of a Murderer" by Patrick Suskind. Afterword, the world will never smell the same.

    http://www.amazon.com/Perfume-Story-Murderer-Patri ck-Suskind/dp/0375725849/ref=ed_oe_p/105-0457054-2 894057

    q: If you didn't have a nose, how would you smell?
    a: Terrible!

    --
    ...omphaloskepsis often...
  49. On humans, dogs and bears... by gd23ka · · Score: 1

    With some strong smelling agent like chocolate this not really spectacular. In fact: it's lame.
    Other animals have far more sensational abilities to detect smells, dogs come to mind here but
    did you know that a bear's sense of smell is an amazing ten times more acute than in a dog.

    I owned a dog who was deaf but otherwise in perfect health. One day I had him off the leash and
    while he was looking the other way a rabbit ran across the road and disappeared into the fields.
    Had he seen it he would have given immediately given chase. A minute later he walked across the
    line on the road the rabbit had run past his nose picked up one or two molecules of rabbit sense
    and suddenly he yelped in surprise and gave chase. Now if humans could do _that_ then _that_
    would be news.

    As far as other animals sense of smell is concerned, I'll thrown in another piece of trivia while
    we're at it: A Bear's sense of is ten times as acute as that of a dog. Oh and don't think there's
    a tradeoff involved. They can hear far beyond the human frequency range and they have color vision
    and their eyes are considered at least as good as ours.

  50. Not Surprising... by whisper_jeff · · Score: 1
    I've worked at gaming conventions. Rest assured, it comes as no surprise to me that humans smell.

    What?

  51. The nose is just the outside by Anonymous Coward · · Score: 0

    All that air feeds into plenty of real estate in the sinus passages just behind the nasal entrance. Goes on for inches and inches. Past the width of the eyes behind the cheek bones and right next to structures of the ears. As far apart inside our heads as is structurally possible. The sinuses have a complex structure and pattern of ciliary movement that has been implicated in cleaning maintenance. I wonder how much of the structural complexity may be involved in smell. In any case, the actual sensors may be spaced much wider than the entrance holes. I wonder if the sinuses create a differential gradient of stink from each nostril to act as an amplifier to this stereo sense.

  52. Hmmm by Klaidas · · Score: 1

    I smell a slow news day...

  53. Article title by hacksoncode · · Score: 1
    "Human Sense of Smell Underestimated"

    If this is news for geeks, shouldn't that be "Sense of Human Smell Underestimated"?

  54. Nothing new here by Anonymous Coward · · Score: 0

    Move along, nothing to see here.

    Extraordinary feats of smelling (pun intended) have been performed by feral humans.

  55. Um, that plus... by jpellino · · Score: 1

    Dogs have roughly 40 times the olfactory nerves/sensory surface area as humans - they're pretty much wired for it.

    --
    "Win treats sysadmins better than users. Mac treats users better than sysadmins. Linux treats everyone like sysadmins."
  56. That may be closer to the truth than anything els by jlawson382 · · Score: 1

    "So, the scents drift by and something in the back of your mind says 'that's nice', but you are too busy talking on your cell phone to notice." That may be closer to the truth than anything else. When riding my motorcycle, I've noticed that I can very nearly tell you what's on the stove in the house I just passed; but in a car, even with the windows down, it's not as obvious. (This is while wearing a full-face helmet, so by all rights the only thing I should be able to smell is my own sweat, ew.) I think it's tied to the fact that when you're riding a motorcycle among the herds of SUVen you are forced to be more aware of your surroundings to avoid becoming road pizza - while in the car, most folks are more occupied by (as you said) their cellphone, the funny guy on the afternoon radio show, and a million other distractions.
  57. Animal smell capabilities are exaggerated by banerjek · · Score: 1

    ... demonstrated that humans can follow a scent trail -- an ability that most had assumed only animals possessed... Have these people never observed dogs? If dogs have such a great sense of smell, why do they have to hold their noses about 2mm from another dog's butt (or a pile made by another dog) for 30 seconds to form an opinion about what they're sniffing?
    1. Re:Animal smell capabilities are exaggerated by Anonymous Coward · · Score: 0

      Maybe they are able to pick out so much complexity beyond "pile of shit" or "dog ass" in what they are smelling that they need that extra time?

  58. Re:Agree no surprises. Richard Feynman documented by Ceriel+Nosforit · · Score: 1

    > ...it's pretty sad that the obvious gets passed as new, novel research.

    So, gravity. Pretty obvious, yes?
    I won't beat around the bush; Seeing the obvious as something special is an invaluable ability for a researcher. But still studying this "obvious" discovery requires a lot more...

    Not to mention the importance of getting one's research published. If one doesn't do that one gets omitted from Wikipedia due to Original Research, to exemplify.

    --
    All rites reversed 2010
  59. of course! by jaimz22 · · Score: 0

    it's got to be true, how else do you explain the AX affect!?

  60. Not mine.. by Flamekebab · · Score: 0

    My sense of smell isn't underestimated - I have hyponosmia!
    No, really, I can hardly smell anything and the things I can smell vanish quickly (well, they're "tuned out").

  61. of course we can track by smell by corbettw · · Score: 1

    How do you think I find certain, unnamed, UNIX sysadmins in the office?

    --
    God invented whiskey so the Irish would not rule the world.
  62. Nothing new by Anonymous Coward · · Score: 0

    I thought Richard Feynman already did this study.

  63. /.'ers smell alright! by Dareth · · Score: 1

    I don't think the average slashdotter should go around asking females if they smell!

    They might not like the answer they get!

    --

    I only look human.
    My mother is a halfling and my dad is an ogre, so that makes me an Ogreling
  64. We all volunteered by Dareth · · Score: 3, Insightful

    ... for the psych experiments at my school. The form we all signed said we did it of our own free will. Failing our psych class if we didn't surely didn't motivate us in any way.

    --

    I only look human.
    My mother is a halfling and my dad is an ogre, so that makes me an Ogreling
    1. Re:We all volunteered by markov_chain · · Score: 1

      We had to do experiments for credit too, it's a cheap way for the depts. to get subjects. I picked one with electric shocks, but it turned out to be lame. The two poles were an inch from each other, so the current was localized and only stung a little bit.

      --
      Tsunami -- You can't bring a good wave down!
    2. Re:We all volunteered by RealGrouchy · · Score: 1

      I thought parent was more funny than insightful/interesting, particularly since it was already implied by GPP.

      - RG>

      --
      Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
    3. Re:We all volunteered by legocoach · · Score: 1

      I actually had a psych prof admit that this may, in fact, invalidate all psychological experimentation in the US, as it is not a truly random sample!

    4. Re:We all volunteered by mikeisme77 · · Score: 1

      That's one point, and the other point is that if the students are coerced (e.g. due to fear of failing the class) then their participation is not truly voluntary and it violates the IRB (and very few journals will accept anything for publication that has not been approved by the IRB).

  65. something we all new on way or the other by __aalwyc6372 · · Score: 1

    there's a german saying: "jemanden nicht riechen können" (http://dict.leo.org/ende?search=jemanden+nicht+ri echen+k%3Fnnen), which directly (word by word) translated into english would be: "not to want to smell someone". it seems there's more to phrases like that, than most people knew, even though it's quite commonly used.

    next, they tell us, that everyone's "aura" is just a kind of wave pattern, that is emitted by our each one's personal quantum state, which would lead us directly to: "to be on the same weave length with someone".

  66. Re: Trail Smell by Anonymous Coward · · Score: 0

    But! Could they find some grass in a jar of chocolate?

  67. Well, actually... by Bertie · · Score: 1

    I Am Not A Doctor. But I've a number of friends who are. And they're not generally the sort of people to make stuff up. One told me of a gentleman of his acquaintance who was a gynaecologist. Now, gynaecologists have famously low sex drives, for obvious reasons, but it never stopped this fella. However, his pillow talk left something to be desired. He has been known to inform a lady post-coitus that she may be infertile, purely on the basis of the scents and tastes he encountered whilst pleasuring her.

    True or not, I couldn't tell you, but like I said, these fellas have enough great true stories that they've no real need to make them up.

  68. Re:Agree no surprises. Richard Feynman documented by cayenne8 · · Score: 1
    "This shouldn't be a surprise to anyone; and it's pretty sad that the obvious gets passed as new, novel research."

    A more interesting study, perhaps, would be the effects (positive or detrimental) on those of us who spend a LOT of their life, with little or no smelling ability.

    I've had allergies since a child...and most days, nose is so plugged up, that I don't really smell much...

    I like to cook...and my food is always VERY heavily seasoned...I know part of that comes from being raised in the south, but, I think a lot of it comes from my not having a very sensitive sense of smell on most days....so I have to season my food a lot to get it where I can taste it.

    Anyway, I think yes...smell as a very important sense for humans is a given...but, I think a study of those with smell vs. those that lack good nasal sensitivity, would point out a lot of things.

    --
    Light travels faster than sound. This is why some people appear bright until you hear them speak.........
  69. Re: structurally? by An+anonymous+Frank · · Score: 1

    The location of our eyes is at the front of our heads because we are predators, so perhaps this is the same for the nostrils, which many predatory animals indeed use to track their prey. As for the ears, perhaps they are positioned so that we may not be surprised by our peers or other predators?

    I am referring of course to how front-mounted sensory organs are better able to detect the distance of the target that is being sensed. (As in an increased perception and evaluation of depth.)

  70. Individuals' scents, subconsciously different by rdmiller3 · · Score: 3, Interesting

    I remember reading (somewhere) a scent-related experiment which was suggested for kids. The purpose was to demonstrate that people can differentiate the odors of other individuals even though they don't consciously smell anything at all.

    The procedure went something like this:
    Distribute a freshly-cleaned T-shirt in a zip-lock bag to all participants. Groups trying this experiment should be small, less than 10 people. Each person should bathe in the evening and wear the T-shirt overnight, placing it back into the zip-lock bag in the morning (no distinctive folding or rolling, just shoved in). When everyone is back together again, the bags are gathered while a non-participant draws numbers from a hat, writing the number on the bag and recording who brought it. The number correspondence is kept secret. Bags are then passed around and participants try to guess who wore each shirt.

    The article I was reading said that you should expect "uncanny" accuracy, the difference in scent seeming like a "hunch" or a "feeling" rather than a conscious recognition.

    Now the even weirder part. A similar experiment was done where the shirt-wearers were unknown to the sniffers. The people smelling the shirts were given a set of photographs, and asked which one the shirt seemed to belong to. Apparently, they scored correctly by a significant margin.

    Now, since I'm busy I'll just leave it up to the reader (and Google, perhaps) to find the sources.

    1. Re:Individuals' scents, subconsciously different by Breakfast+Pants · · Score: 1

      I remember reading this, and it turned out the 'random number guy' didn't select his random numbers randomly. Instead he was instructed to just assign numbers to each individual. As it turned out, he subconciously assigned numbers like '0' to the fatter folks and '1' to the skinnier, and other things of that nature. Those biases built up and that explained the photograph correlation.

      Now, since I'm busy I'll just leave it up to the reader (and Google, perhaps) to find the sources (hey, that BS line worked for the last guy).

      --

      --

      WHO ATE MY BREAKFAST PANTS?
  71. Re:Agree no surprises. Richard Feynman documented by Anonymous Coward · · Score: 0

    "Richard Feynman (famous caltech physicist) documented his observations of this in his autobiography too ..."
    "... it's pretty sad that the obvious gets passed as new, novel research."

    Ii hope I'm not the only one who caught this guy's joke ... It's a dead giveaway with 'new, novel' being so very redundant, and also following the mention of the autobiography >_>

    Anonymous out

  72. Great news for the Fetish Community!!! by eno2001 · · Score: 1

    Treating someone like a dog in BD/SM games will take on a whole new meaning. Just imagine hunting parties where the trackers are humans on all fours in leather gear with collars. ;P

    --
    -"...bad old ideas look confusingly fresh when they are packaged as technology" - Jaron Lanier (Digital Maoism on Edge.o
  73. obl. Simpsons reference by Johnny5000 · · Score: 2, Funny

    The ten dollars you would have earned could be exchanged for many chocolate bars.

    Explain how?

    --
    The libertarian solution to the failures of capitalism is to apply more capitalism til the failures are fixed.
    1. Re:obl. Simpsons reference by suggsjc · · Score: 2, Funny

      We have this amazing thing called currency. That is what the $10 is. It can be used to purchase goods and services. In this case the good/services would be the multiple chocolate bars.

      Hope that helps. Let me know if you need a diagram.

      --
      When I have a kid, I want to put him in one of those strollers for twins and then run around the mall looking frantic.
    2. Re:obl. Simpsons reference by Trillan · · Score: 1

      "Tell me more, brain."

    3. Re:obl. Simpsons reference by Johnny5000 · · Score: 1

      The proper obligatory Simpsons response would go something like this:

      Homer: Aw, twenty dollars! I wanted a peanut!
      Homer's Brain: Twenty dollars can buy many peanuts!
      Homer: Explain how?
      Homer's Brain: Money can be exchanged for goods and services!
      Homer: Woo-hoo!

      substitute $10 and chocolate for $20 and peanuts as needed.

      --
      The libertarian solution to the failures of capitalism is to apply more capitalism til the failures are fixed.
  74. Re: male vs. female smell(s) by An+anonymous+Frank · · Score: 1

    I wouldn't know if every person out there can easily discern other people's personal smells, or body odour (without getting into bad b.o. per se,) but at least I'm assuming that many are able to recognize a large difference between what might be named the female (category of) smell(s) and the male one(s). Meaning that if there were such a thing as a "spectrum of (individual/personal) odour/smell" then let's say that women would tend to be at one extreme, and men at the other, whereas, if you're a man and you've played some sort of sport like hockey or football where there is sweaty equipment involved and a "hitting the showers" scenario, you've already come across the unmistakable raw smell of "maleness", for example.

    Now please have an open mind here while I describe something that I thought was worthy of note:

    I am a bisexual male, and as such, I've had sexual intercourse with heterosexual women, homosexual men, as well as bisexual men, and I have observed that these are in three separate and distinct categories of personal odour/smell. Meaning that I've found that homosexual men did not smell like me, but thought nothing of it until the first time I had sex with a bisexual man, at which time it hit me instantly that this (bisexual) man smelled just like me, and just like any heterosexual males I'd ever known. Not that you need to get that intimate to catch a man's smell, but the context made it such that recognizing the smell (or rather that category) could not be avoided.

    So, to resume, it seems that (at least as far as my experience has shown) homosexual men do not smell like heterosexual or bisexual men do. (Hope that was clearly put.)

  75. Animals by Anonymous Coward · · Score: 0

    an ability that most had assumed only animals possessed
    Humans ARE animals too.

  76. Smell and memory by dzeaiter · · Score: 2, Insightful

    What about the ability of our sense of smell to make us remember things?

    It's very strong with me, almost to a crazy point. Smelling a fragrance that I associate with someone makes me remember them (almost jolts me) much more than anything else, even seeing a picture of that person.

  77. Intensity of the Smell? by Paul+Slocum · · Score: 1

    There's no mention of intensity of smell. It seems pretty obvious that humans could follow a smell trail if it's strong enough -- we do have the sense of smell and the ability to turn our heads in different directions. Not much of a revelation.

    One of the researchers in the article says the biggest problem for humans vs. dogs is that they can's move as fast with their nose to the ground. Sure we can follow a strong scent trail through the grass, but could a human track somebody walking through the woods just by scent? I seriously doubt it. Animals seem to have the ability to track very subtle smells and easily differentiate them from many other strong smells in the same area.

  78. I Think I'll Hang On to my Beagle... by beadfulthings · · Score: 2, Interesting

    While I'm not surprised that humans can track a scent, and I'm certainly not surprised that civilization may have interfered with this ability, I'm just not sure it's one of our areas of specialization. Your average garden-variety scent hound has more scent receptors, packed into a much larger area, stashed inside that world-class smeller. His entire face, including his long, floppy ears and all those wrinkles (if he has them), is intended to funnel all that scent up into his wide nostrils, where he can interpret and act on it. I've long imagined that at the dawn of time, the human/dog interaction may have gone something like this:

    Dog to Human: Wanna go get some meat?
    Human to Dog: Yeah. You run on ahead, don't forget to let me know where you are, and I'll follow along with this stick. I just figured out how to put some sharp flint on the end of it. Should do a good job of killing that gazelle or whatever it is.
    Dog to Human: AROOO!
    Later that same evening...
    Human to Dog: Get away from that! Let me hack it up with this sharp piece of flint.
    Dog to Human: Good job! If you don't mind, I'll just gorge myself on the leftovers so I can go home and regurgitate some for the wife and pups.
    Human to Dog: Yeah, I'm taking the good parts. My wife has been gathering some kind of green stuff, and she'll put it on the meat and apply fire to it. Good eating!

    No wonder humans are generally so fond of dogs. We're hunting buddies from way back.

    --
    "Here's what's happening. You're starting to drive like your Dad..." - Red Green
  79. How does Helen Keller smell? by SirBruce · · Score: 1

    Terrible!

    Bruce

  80. Nah - that stinks by Anonymous Coward · · Score: 0

    Someone had to say it :)

  81. Can they fix the sense of smell for some though? by AbRASiON · · Score: 1

    Mine's stuffed, has been for years.
    It works but it's extremely weak compared to how it was when I was a kid.
    I rarely smell perfumes of girls, even if they put their hand to my face and say sniff, most meals are scentless, I can only really smell very strong things. (Petrol fumes, coffee from a can - etc)

  82. First Sense by Kensai7 · · Score: 1

    I smell dead people. Walking around like regural people... :p

    --
    "Sum Ergo Cogito"
  83. Stereo View by k2r · · Score: 1

    > Then our brain calculates how far away objects are from us by noticing how much
    > inward each eye has to rotate to hold the object in focus

    Well, no. Or you would look quite funny for any non-chamaeleon-being and would be busy constantly rotating your eye to measure distances.

    Your brain compares the different pictures both eyes record and finds the transformation it has to do to merge (points on) one picture into (points on) the other. This transformation matrix gives good hints about the distance for a few meters, especially for slowly moving or immobile objects.

    For all the rest you use size-differences, lighting differences, size-changes of moving objects and a lot of other guesswork.

    Many of people (me included:) don't have the first capability because they have (had) strabism (as a child). They still might be able to ride a motorcycle and avoid colliding with other objects (mostly capability 2) while they are fun to watch while parking a car in a small space (method 1 required, or a car of very familiar dimensions)

  84. Re: structurally? by sbaker · · Score: 1

    Eyes and ears are placed dramatically differently in predators and prey - but nostrils are pretty much always close together in all animals.

    It's definitely a thought-provoking topic.

    --
    www.sjbaker.org
  85. An old joke... by SonicSpike · · Score: 1

    This reminds me of the old joke:

    Q - How is being an OB/GYN and a pizza delivery boy the same?
    A - They can both smell it, but can't eat it!

    --
    Libertas in infinitum
  86. I for one... by SurturZ · · Score: 1

    I for one am happy to serve as a snifferhuman for our new dog overlords.

  87. Smell/hearing difference across sexual orientation by Amitz+Sekali · · Score: 1

    Dr. Dennis McFadden from UT Austin found significant differences on hearing sensitivity between some comparisons of male/female with various sexual orientation. Last time I heard, he was trying different variation of sounds to find all variations that create significant differences on all possible comparisons. Anyway, if my memory serves me right, there was also some studies finding significant difference on smelling sensitivity. And study of length of fingers, hand/finger pattern and their correlation with sexual orientation. The length of fingers study is conducted at UT Austin.. And there is a research center for female sexuality at UT austin too. I wonder if UT Austin psychology majors are sexually more capable.. :-)

    --
    If you delay pleasure infinitely, the pleasure will be infinite. (YM)
  88. No wonder shirts with collars are still so popular by Anonymous Coward · · Score: 0

    this is why. :)

  89. God I am a nerd. by pavon · · Score: 1

    I read that as saying that he could tell which of his books she had been handling by recognizing their scent on her hands. This didn't phase me a bit, although I was a bit surprised that bottles would have a unique enough smell. It wasn't until I read another poster's description that I realized he was recognizing the scent of his wife on the books.

  90. Re:Agree no surprises. Richard Feynman documented by JourneyExpertApe · · Score: 2, Insightful

    Many people who suspect their spouses of affairs also observe this ability too (knowing in which rooms a guest's been in). Maybe they can smell the perfume/cologne? It's my experience that the "other woman" (or "other man") wants to be detected in order to force a confrontation between the committed couple, and, thus, will intentionally leave clues to be found (strong perfume/cologne, condom wrapper, undergarments, etc.) After all, they have much less to lose than the one who is involved in a committed relationship. Detecting infidelity doesn't necessarily require a keen sense of smell.
    --
    If you can read this sig, you're too close.
  91. Re:Agree no surprises. Richard Feynman documented by RealGrouchy · · Score: 1
    Richard Feynman (famous caltech physicist)

    "Famous", by definition, implies that you don't have to say who he is. Or that he's famous.

    - RG>
    --
    Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
  92. yeah,...smells fishy by TheCybernator · · Score: 1

    some one had to make this joke.

  93. So, we smell better than we expected by jandersen · · Score: 1

    ... humans can follow a scent trail -- an ability that most had assumed only animals possessed.

    Aren't humans animals, then?

  94. I don't know who is doing all this underestimating by br0d · · Score: 1

    but it certainly isn't my friends and family after I've been eating burritos and drinking beer.

  95. Re:sense of smell first to develop by ksheppard · · Score: 2, Interesting

    As a new mom I was surprised (and not especially happy) to discover that, on entering a daycare room filled with toddlers, I could right away determine that MY toddler was sporting a full diaper load. Many moms with kids that age report the same experience. There's nothing like dealing with your own babies to make you realize what an animal you REALLY are.

  96. I think the above poster is partway right by Cro+Magnon · · Score: 1

    I think environment does make a significant difference. Yes, primates rely mostly on sight, and no ape is going to out-sniff a dog. But I'm sure other primates smell better than civilized man.

    --
    Slow down, cowboy! It has been 4 hours since you last posted. You must wait another few hours.
  97. Bill Hicks and Smoking by Eagleartoo · · Score: 1
    From his Flying Saucer Tour cd:
    People are alway saying to me 'If you quit smoking you get your sense of smell back,' 'I live in New York city I don't want my fuckin sense of smell back.'
    '*SNIFFS* Is that urine!? Honey I think I smell a dead fellah!'
    --
    -You have been modded appropriately-
  98. The Modern Canine Hunter by Slashdot+Parent · · Score: 1
    Oh my how times have changed. My family has a Beagle. They are great family dogs--love to play outside, very gentle with kids, smart, yet trainable, and don't tear the house to shreds. Believe me, we all love our blessed Beagle. But here is how the typical hunt goes with her:
    Me (having dropped some foodstuffs on the floor): Oops.
    Beagle: That's my cue! Into the kitchen I run!
    Me: Good dog. Clean up the mess.
    Beagle (jumping around madly): I'm so excited! I'm so excited! People food! People food!
    Me: Dog, please just clean up the floor.
    Beagle (now jumping up and down on just her hind legs): So excited! Where's the food? Where's the food?
    Me (pointing to the food): It's right here, genius. Right here. Clean the floor like a good dog.
    Beagle (sniffing madly all over the floor, totally passing up the food): Where's the food? Where's the food? So excited!
    Me: It's right here, you moron. Here! Eat the food. It's right here!
    Beagle (still running wildly all around the room sniffing): Where's the food? I love people food. So excited!
    Me: Idiot! What the hell is the matter with you? The food is right here. Right here! Please just eat it, for the love of god!
    Beagle: Oh, there it is. Let me just wolf this down now.
    Me: Worst. Beagle. Ever.

    I think something's happened to Beagles over the years. Now if they could only evolve away that obnoxious noise that they make.
    --
    They don't grade fathers, but if your daughter's a stripper, you fucked up. --Chris Rock
  99. Please Please by d_54321 · · Score: 1

    Please someone tell me this was not funded with wasted taxpayer money.
    Else can we do a study on the over-estimated human sense of common?