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Face Recognition Needs 3 Areas Of Human Brain
sushant_bhatia_progr writes "Nature has an article on the recent discovery that face recognition in humans targets 3 areas of the human brain. Using mugshots of celebrities, Pia Rotshtein at University College London and her colleagues have shown that there are at least three separate areas for processing and recognising faces. One processes the physical features of the face, one decides whether or not the face is known, and a third retrieves information about that person, such as their name. Rothstein's team used a computer to create a series of images in which the countenance of film star Marilyn Monroe gradually morphed into that of former British prime minister Margaret Thatcher, or that of James Bond actor Pierce Brosnan transformed into current prime minister Tony Blair."
Gotta love having enough celebs with mugshots to run an entire research experiment. :)
"Rothstein's team used a computer to create a series of images in which the countenance of film star Marilyn Monroe gradually morphed into that of former British prime minister Margaret Thatcher, or that of James Bond actor Pierce Brosnan transformed into current prime minister Tony Blair."
And the fourth part of the brain. Recognizing the horror of it all.
Celebrity shots probe face recognition
Helen Pearson
The brain uses three steps to identify faces.
The features in this set of images change gradually, yet our brains flip suddenly from seeing Margaret Thatcher to seeing Marilyn Monroe. © Dr Jenny Gimpel/University College London By transforming the features of Margaret Thatcher into those of Marilyn Monroe, researchers have revealed hints about how our brains put a name to a face.
Neuroscientists already know that certain spots in the brain play a vital role for recognizing a familiar face, even as it changes with age or a new hairstyle. But they have not been clear precisely what each area does.
Using mugshots of celebrities, Pia Rotshtein at University College London and her colleagues have shown that there are at least three separate areas for processing and recognising faces. One processes the physical features of the face, one decides whether or not the face is known, and a third retrieves information about that person, such as their name.
Rothstein's team used a computer to create a series of images in which the countenance of film star Marilyn Monroe gradually morphed into that of former British prime minister Margaret Thatcher, or that of James Bond actor Pierce Brosnan transformed into current prime minister Tony Blair.
Although the physical features gradually change from one face into another, the researchers showed that subjects looking at the images tend to "suddenly flip" from seeing Marilyn to seeing Maggie, explains team member Jon Driver.
The researchers then showed their subjects three different pairs of images from the array while they were in a functional magnetic resonance imaging (fMRI) brain scanner. The two pictures in one pair were identical; in another pair they had different physical characteristics but were both still recognizable as Maggie; and in the other pair they differed by the same degree in their physical characteristics, yet one was still recognizable as Maggie and the other as Marilyn.
The study allowed the team to pick out the three areas of the brain that carry out different tasks when someone walks into a room. The first region, a pair of structures at the back of the brain called the inferior occipital gyri, was most active when the physical features, such as eyes and hair, in the two pictures differed. It appears to analyse these physical characteristics.
A second region, the right fusiform gyrus, located just behind the ears, was most active when one picture showed Maggie and one showed Marilyn. This region appears to distinguish between faces, perhaps by comparing the face to known ones.
A third area, the anterior temporal cortex, appears to store knowledge connected to the faces. This region was most active when people knew the famous subjects particularly well; less so in those who, for example, were less familiar with the British politicians.
The study is the first to clearly show these three separate stages of face processing, says psychologist Isabel Gauthier, who studies face and object recognition at Vanderbilt University in Nashville, Tennessee.
Driver says he now wants to study patients who, through injury or disease, have particular problems recognising people. Some people with prosopagnosia, or face-blindness, may be unable to recognise faces as familiar as their own children. Patients with dementia may struggle to put a name to a household face.
Driver wants to examine whether he can match up patients' specific problems to different defects within the brain regions identified by the team. He also wants to find out whether some patients could be trained to revamp these failing regions.
We need 3 parts of the brain to recognize celebrities.
-One to recognize the face and map it to its info.
-One to categorize the info as hot girl or not.
-One to ignore the not-hot-girls.
Marilyn Monroe gradually morphed into that of former British prime minister Margaret Thatcher
Whoever though of that is one sick scary F***er!!!
... it's pretty clear that Tony Blair has been morphing into Thatcher for years.
Shame he doesn't have her balls, though.
Sometimes, "context" can be more telling than just the face. Brittany's are way bigger, IMHO.
An Indian-American Hindu committed to non-violent thought/speech/action alarmed by the global explosion of radical Islam
Haven't you worked it out yet? It doesn't matter where they come from, All politicians are crooks.
Same here, but I found a trick that helps.
When you meet someone, and they or someone else tell you their name, repeat it back ("oh, I have a cousin named Jill" or "hmm, John's an unusual name"), and there's a very good chance you'll at least remember what you said later on.
I do something similar with passwords. Normally, they're a jumble of letters and numbers from something around me when I needed to think of them, and usually I can remember what that thing was, so the password then pops into my head.
IAAfA (I am an fMRI analyst) Of course, the last highly publicized study that gave us a "face recognition area" of the brain turned out to be a crock. The same haemodynamic response came from birdwatchers seeing birds, or car experts seeing cars. It was a cognitive recognition area, not just a "face recognition area". I wouldn't be suprized if this experiment had the same falicies (article wasn't very precise).
Modularization: Great for OO programming, crappy for the human brain.
I heard they tried one using Michael Jackson morphing into Diana Ross, but no-one could tell the difference.
True it is no surprise that the three intuitive components of face recognition (see, recognize, identify) show activation in different regions of the brain. But these type of "it's obvious & intuitive" comments follow many scientific discoveries, especially those in psychology, and entirely miss the point of the experimental method - to prove (or disprove) those intuitions.
The problem with such a racist is not their thoughtcrime, failing to recognize racial differences, but their actions. If they can't (or won't) notice differences among individuals of other races, that's they're problem. When they burn these people's houses down, beat them in nightclubs, refuse to hire them, or do other bad things, it doesn't really matter that their facial recognition is wired wrong.
When we make thoughts illegal, we're faced with legislating people's minds. Not only politically catastrophic in a free society, but probably medically irresponsible to pretend we are in control of all the results. We have a flawed, but much more successful, history of managing behavior. We should stick to what we know until we've improved it to adequacy, before messing with minds and all the worse consequences at stake.
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make install -not war
the countenance of film star Marilyn Monroe gradually morphed into that of former British prime minister Margaret Thatcher
You don't need computers for that. You just need to wake up next to someone you don't remember meeting.
For more information on the subject, listen to the song "9 Coronas".
I am officially gone from