Slashdot Mirror


Hypnosis Gets Positive Recognition

An anonymous reader writes to tell us the New York Times is reporting that, despite its negative history, hypnosis is now getting some favorable attention from neuroscientists. From the article: "These extensive feedback circuits mean that consciousness, what people see, hear, feel and believe, is based on what neuroscientists call "top down processing." What you see is not always what you get, because what you see depends on a framework built by experience that stands ready to interpret the raw information - as a flower or a hammer or a face."

14 of 353 comments (clear)

  1. *rubs temples* by Chickenofbristol55 · · Score: 4, Funny
    You will believe in Hypnosis...... you will believe in Hypnosis.

    Guy: It didn't work, i still think its a crock.

    Oh, well I tried

    --
    public class null extends java applet { System.out.print ("Tabula Rasa"); }
  2. I am getting sleepy... by Aidski · · Score: 4, Funny

    ...Open source is the best solution for everything. I will use open source, O great slashdot ...

  3. Can you tell a green field... by Anonymous Coward · · Score: 4, Insightful

    From a cold steel rail..

  4. Flawed experiment? by Captain+Sensible · · Score: 5, Interesting

    "The probe, called the Stroop test, presents words in block letters in the colors red, blue, green and yellow. The subject has to press a button identifying the color of the letters. The difficulty is that sometimes the word RED is colored green. Or the word YELLOW is colored blue. " Hypnotised subjects recognised the words more often than unhypnotised subjects.

    The Stroop test also differentiates between subjects with a thick corpus callosum and those with a thin corpus callosum - eg: left handers and right handers. Considering the small sample was this factor controlled for?

    Also psych experiments use very small samples and have to use the repeated measures statistical technique. This can identify significance but is restricted in other information it can provide.

  5. Self hypnosis software? by GillBates0 · · Score: 4, Interesting
    Okay...I'm intrigued by this hypnosis thing, especially having seen a couple of impressive onstage performances on campus.

    Anybody try any of the self hypnosis software like Virtual Hypnotist successfully? I've tried a few opensource/free programs, and they don't seem to work.

    Note that I'm interested in self hypnosis purely from the scientific-curiosity/entertainment/skeptic point of view. Not looking for serious therapy stuff here (Office Space comes to mind).

    --
    An Indian-American Hindu committed to non-violent thought/speech/action alarmed by the global explosion of radical Islam
  6. Re:Use in marketing? by Tackhead · · Score: 5, Funny
    > Will there come a day where the study of hypnosis, or other forms of cognitive suggestion, is abused by firms for marketing? Perhaps some allready are. What kind of privacy law would restrict this?

    <jedi>
    There will not come a day when marketers abuse this.
    No marketers are abusing this.
    No privacy law is required.
    </jedi>

    Nothing for me to see here. I'll move along.

  7. A testable theory by kentrel · · Score: 4, Interesting
    The language of that posting presupposes that hypnosis was not accepted previously, which in effect is a form of hypnosis! The poster is poorly informed, its been around for a long time, has been accepted by many in the medical, sports and psychiatry fields, with fairly easily testable ideas.

    Hypnosis might have a negative reputation if you buy the movie "mind control" version, which has nothing to do with reality, and shame on anyone who even thought it was. It has long been a testable theory, and research has shown that every 90 minutes or so the brain goes into a slightly hypnotic state, daydreaming if you will. This is a natural process of the brain. It's still not known how or why this happens, but the effect has been known for a long time.

    It's a very weird thing to demonstrate to someone who's long held the negative "its' a crock of shit" view based on what they've seen on movies or in stage hypnosis.

    I'll give you an example of something that a psychotherapist (long story) did for me. When you get into that relaxed state, that's not quite as relaxed as sleeping, but its still a very numb relaxing pleasant feeling, the hypnotist "tests" your state in numerous ways. The most popular one is telling you your eyes are glued shut and no matter how hard you try you cannot open them... then a few minutes later asks you to try, but you will not be able. Every time this happens to me, I *KNOW* I can open my eyes, I'm fucking positive about it, I *KNOW* they're not glued shut, I *KNOW* the hypnotist is a lying bastard, full of shit.. but you know what... I don't wanna... I like them shut. It's difficult to explain, but you just find yourself wanting to go along with fun little things like that.

    That's a crude little insight into what a hypnotic state feels like and the level of "control" anyone has over you. Try it yourself, you dont have to believe in it. If anything, its just a great way of relaxation. I use it at night as a cure for insomnia. A guided session helps me get to sleep within about 10 minutes. You might argue that this is just the power of suggestion, or the placebo effect... but that's exactly what's its meant to be.

    I also make my own mp3's depending on what I'm looking for.. If preparing for a job interview I run through the interview over and over again in a hypnotic state. It's a great way of mental rehearsing something. Better than just doing it in front of a mirror....

  8. *yawn* and no, not from hypnosis... by wanax · · Score: 5, Interesting

    The whole idea of 'top-down' or cognitive drive for the sensory systems is very addictive, since among other things, it allows you to explain perception as some type of baysian method. However it is simply untrue. The visual system is replete with examples, from the Craik-O'Brien-Cornsweet illusion, to stuff like Julesz' Random Dot stereograms (that CANNOT have top down effects), that defy a top-down framework.

    Even with effects that might be top-down modulated (like illusory contours) the physiological evidence is totally towards these things happening in the early nervous system. Although there is definitely some feedback present even in this area, one has to consider that RC constants for most neurons are about ~10ms, and much of our perception takes place in ~100ms. These timeframes are VERY well studied, and generally accepted.. and of that 100ms, about 50ms of the time is the signal travelling from the retina to the cortex (see Bullier & DeAngelis, among others). That doesn't leave much room for dramatic top down feedback for general sensory perception.... Your visual system, bottom up, manages to figure out edges, what colors to fill them in with, various levels of depth, what's moving (in relation to your eye movements.. no easy challenge.. how can you tell when your eye moves whether you're looking at a pen, or a moving streak?) and in relation to what else, all within 100-150ms of the stimulus. That just doesn't leave time for very dramatic 'high level' feedback like this article assumes.

    Although I've only mentioned vision, there are similar issues in all sensory modalities except audition, which is a special case, since audition is optimized for temporal accuity, but it has its own issues that make it look like much of your perception happens without much top-down activity.

    From our current understanding it appears that top-down activity does two things: 1) Equalize 'gain' in the sensory system.. if the amplification levels across you're visual field were different, you wouldn't be able to tell whether a line was something that had to do with the outside world or noise. And 2) Modulate acuity for attention.. which is very complicated in and of itself, but there is good evidence that most early perception occurs even in areas we aren't attending to.

    The main 'evidence' in this article is from a 'brain scanner' which is probably fMRI. As one of my professor's liked to say, "In fMRI we show people a picture of their ass, then a picture of a hole in the ground, and subract them." Most fMRI statistics include averaging across areas... which is nice, until you remember that our brain isn't on a sphere, but something with fissures in it, and so you just averaged two things that were (cortically speaking) in other worlds (since because of the fissure they might be centimeters apart! Remember the Cortex is a laminar archiecture around the surface)... so I'm highly skeptical, to say the least.

  9. Article Still Minimizes Hypnosis by chromozone · · Score: 4, Interesting

    That wasn't a very good article actually. Top down this...flashing lights/colors that - close to the same old hypnosis as gimmick POV. Hypnosis in one form or another is at the heart of what is called "mental Illness". Even healthy people struggle with mental tapes that play over and over in the mind. A kid getting upset after being yelled at by her parents and called "no good..lazy..a floosey etc" the parents is actually getting set up for hypnotic conditioning. Any shock suspends what hypnotists often call an individuals "critical factors" or the ability to maintain reason, focus, objectivity etc. When critical factors are suspended the door to the sub conscious is accessed and able to receive suggestions. A kid called "no good" while being stressed and upset will find those thoughts in the mind and struggling with them will make them worse since concentration is a function of hypnosis and all struggle deepend the psychic funk. One reason people can't break habits is because they worry, struggle and analyze the problem too much. Indeed, one reason therapy often backfires is because the client is asked to get deeper into focusing on what is wrong instead of becoming objective to it. Post Traumatic Stress Disorder is essentially a hypnotic problem. People under severe stress react and the traumatic elements get inside a person's subconscious where they re-animate again and again. A persons conditioned reflex response mechanism which is like the body's memory can feel pain from an ordeal that they were not even aware of when the traumatic event was taking place. Many soldiers and others subjected to stresses that they are shocked by have a consciousness that is overwhelmed as if like a conductor falling into an orchestra. When people dont know how to handle their emotions, or are subject to extreme stresses,they lose some conscious awareness and fall into the gears of their own cognitive and emotional machinery. That's the root for a tremendous amount of mental suffering. Not surprisingly many of the original psychic ruptures take place at home and in the schools when people are kids and get upset by the cruelties, neglects, family problems etc. Media, marketers and politicians etc use these mechanisms (even if only indirectly aware of what principles they are using) by emotionalizing groups of people and then giving them ideas and suggestions. WHen adds play that energizing music and give people feelings and ideas they are trying to condition them hypnotically. People will accept such motivations as if it came from them. Hypnotic elements are all around us and yet it's hardly recognized for what it is. A lot more people can be hypnotized that that article states. One reason people can't be hypnotized is because they are hypnotized already by lifes events and stresses. The correct way to use hypnosis to get someone to stop smoking would be to "un-hypnotize" them. Thats why when a person tries hypnosis for smoke cessation it only works for a little while. Hypnotists don't hypnotize people as much as take over a pre existing state. A fact people don't realize about hypnosis is that intellectual people and people who use their imaginations a lot are the best subjects for hypnosis. People who study a lot are used to focusing their minds and they tend to be sensitive to authority ( a good hypnotists greatest asset is a authoritarian manner) - all good conditions for hypnotic manipulation. One reason artists and such suffer is because they are very open in their own minds to all sorts of forces taking their objectivity captive.

    1. Re:Article Still Minimizes Hypnosis by Joe+Random · · Score: 4, Funny

      I guess that hypnotic suggestion to never use linebreaks hasn't worn off yet.

  10. Re:In other words... by Bogtha · · Score: 5, Insightful

    Perception is reality. Which is why two people can look at the same facts and come to opposite conclusions.

    Not by any conventional definition of reality. What is real doesn't change depending on perception. Reality by definition is objective, not subjective.

    I've noticed pseudoscience types and religious people use "reality" as a synonym for "belief". That's not the accepted definition for reality, and pretty much anything can be considered "real" by that definition, which makes it useless. Don't use "reality" as a synonym for "belief".

    Change the perception, change the reality.

    No, change the perception, change the belief. Change the perception, change the conclusion. You cannot change reality by perceiving it a different way.

    --
    Bogtha Bogtha Bogtha
  11. Re:Use in marketing? by D-Cypell · · Score: 5, Insightful

    Not only is it being used today, but you might even say that 'cognitive suggestion' forms a definition of modern marketing.

    Discussing this with my company's experienced sales and marketing director was enlightening and shocking. Billions of US dollars are spent to harness our subconsious traits. Emotional reaction to certain colours or shapes are used convince us to part with our money.

    Next time you see an ad with an animated character, note the proportion of the characters eyes and head. Most of the time you will see that the eyes and head are proportionally larger than those of an adult human but closer to those of a baby/young child. Why? Because we are genetically tuned to respond in a positive way to children.

    Surf around a few corp websites that offer services to other companies. What percentage use blue as their main colour? Supposedly blue is a 'trustworthy' colour.

    The common misconception is that hypnosis is about swinging a pocket watch and chanting "You are feeling sleepy". The fact is, you are essentially hypnotised by marketing specialised many times (perhaps hundreds of times) daily. It is the reason why millions of people will go to the supermarket and pay double the price of the exact same shit in a different colour box.

  12. Re:In other words... by Bogtha · · Score: 5, Insightful

    Then nothing is, really, red.

    What? you are saying that a material absorbs electromagnetic radiation of particular frequencies only because it is being observed?

    It's true that if nobody was around to see it, nobody would be calling it "red". But the process would still be going on.

    There are no noises.

    Again, I don't see your point. Are you arguing that if a tree falls in the woods, and nobody is around to hear it, the laws of physics change so that it doesn't cause the air molecules nearby to vibrate?

    Words don't mean anything.

    Who cares about what words mean? The meaning of things is defined by interpretation - it's not reality in the slightest.

    --
    Bogtha Bogtha Bogtha
  13. Dr Milton Erikson by gobbo · · Score: 4, Informative
    This is interesting, but, as usual, an art in the hands of a highly skilled practitioner gets lost in the search for reproducibility. Dr Milton Erikson kind of set things off for modern hypnotherapy, but he was extraordinarily perceptive, and generally only took on cases that would work for his methods, so had a resounding success rate.

    What was amazing about Erikson was that he noticed that life is rife with trance states, most of them shallow, temporary, and skilfully deployed for survival purposes. Think about this the next time you get home from a tense commute without really remembering exactly how you operated the car.

    He found somewhat more suggestible cases, and took advantage of what he saw as our natural facility with trances, and of our heavy reliance on metaphor to get through the day. (Of course, I oversimplify.) Plus he was a damn good psychiatrist. Basically, a prodigy. He would find ways of putting people into trances of various depths, for various lengths of time, using freaky techniques like the rhythm of his voice tuned to the listener's body responses, and barely noticeable emphasis on certain words, not unlike fictional characters in the Dune series. Not easy to reproduce.

    His ideas later led to NLP, or Neuro-Linguistic Programming... YMMV.