How the brain recognizes faces...

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Nikki Nyx
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How the brain recognizes faces...

Postby Nikki Nyx » Mon Jun 12, 2017 7:40 pm

A monkey’s brain builds a picture of a human face somewhat like a Mr. Potato Head — piecing it together bit by bit.

The code that a monkey’s brain uses to represent faces relies not on groups of nerve cells tuned to specific faces — as has been previously proposed — but on a population of about 200 cells that code for different sets of facial characteristics. Added together, the information contributed by each nerve cell lets the brain efficiently capture any face, researchers report June 1 in Cell.

Read the article here.

205 neurons in the temporal lobe respond specifically to faces, each neuron to a different aspect of the face. It works a bit differently for familiar faces, though. Recognition of a familiar face involves a single neuron in the hippocampus, a brain region associated with memory. In effect, the 205 neurons in the temporal lobe are the table of possible facial elements, and the individual neurons in the hippocampus, which call up known combinations, are the output from that table.

Who wants to talk about conscious experience? :wgrin:
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Fri Jun 16, 2017 8:55 pm

...and a related article about wasps.

One species, Polistes fuscatus, is especially good at detecting differences in faces — even better than they are at detecting other patterns. To zero on the roots of this ability, biologist Ali Berens of Georgia Tech and her colleagues set up recognition exercises of faces and basic patterns for P. fuscatus wasps and P. metricus wasps — a species that doesn’t naturally recognize faces but can be trained to do so in the lab. After the training, scientists extracted DNA from the wasps’ brains and looked at which bits of DNA or genes were active.

The researchers found 237 genes that were at play only in P. fuscatus during facial recognition tests. A few of the genes have been linked to honeybee visual learning, and some correspond to brain signaling with the neurotransmitters serotonin and tachykinin. In the brain, picking up on faces goes beyond basic pattern learning, the researchers conclude June 14 in the Journal of Experimental Biology.
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby Gord » Sat Jun 17, 2017 1:24 am

LunaNik wrote:...and a related article about wasps.

One species, Polistes fuscatus, is especially good at detecting differences in faces — even better than they are at detecting other patterns. To zero on the roots of this ability, biologist Ali Berens of Georgia Tech and her colleagues set up recognition exercises of faces and basic patterns for P. fuscatus wasps and P. metricus wasps — a species that doesn’t naturally recognize faces but can be trained to do so in the lab. After the training, scientists extracted DNA from the wasps’ brains and looked at which bits of DNA or genes were active.

The researchers found 237 genes that were at play only in P. fuscatus during facial recognition tests. A few of the genes have been linked to honeybee visual learning, and some correspond to brain signaling with the neurotransmitters serotonin and tachykinin. In the brain, picking up on faces goes beyond basic pattern learning, the researchers conclude June 14 in the Journal of Experimental Biology.

https://www.amazon.com/Way-Wasp-Made-Am ... 0029047226
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Sat Jun 17, 2017 1:33 am

Gord wrote:https://www.amazon.com/Way-Wasp-Made-America-Speak/dp/0029047226

:wgrin: https://www.waspnation.com/
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby Major Malfunction » Sat Jun 17, 2017 3:15 am

I've heard they're making leaps and bounds in reconstructing faces from memory with just a brainscan. I'm skeptical, but if it's true, it's gonna put a lot of police sketch artists and professional line-up guys out of a job. Probably back on the streets doing caricatures, leaning against striped walls, and other crimes.
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Re: How the brain recognizes faces...

Postby Gord » Sat Jun 17, 2017 3:35 am

Major Malfunction wrote:I've heard they're making leaps and bounds in reconstructing faces from memory with just a brainscan. I'm skeptical, but if it's true, it's gonna put a lot of police sketch artists and professional line-up guys out of a job. Probably back on the streets doing caricatures, leaning against striped walls, and other crimes.

I bet most wanted posters will be featuring graphic nudity in the future then. "Wanted for armed robbery: BOOBS."
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Re: How the brain recognizes faces...

Postby Major Malfunction » Sat Jun 17, 2017 4:04 am

Boobs are more widely accepted than American Express.
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Sun Jun 18, 2017 12:51 am

Gord wrote:
Major Malfunction wrote:I've heard they're making leaps and bounds in reconstructing faces from memory with just a brainscan. I'm skeptical, but if it's true, it's gonna put a lot of police sketch artists and professional line-up guys out of a job. Probably back on the streets doing caricatures, leaning against striped walls, and other crimes.

I bet most wanted posters will be featuring graphic nudity in the future then. "Wanted for armed robbery: BOOBS."

Best way to distract people from looking at your face. :wgrin:
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby scrmbldggs » Wed Jun 21, 2017 5:50 pm

I don't think Pyrrho will allow pronographic avatars. :nyaah:
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Wed Jun 21, 2017 8:55 pm

scrmbldggs wrote:I don't think Pyrrho will allow pronographic avatars. :nyaah:

Who's talking about pron?
Image
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby scrmbldggs » Wed Jun 21, 2017 10:20 pm

To catch a gal, one has to know what her parts looked like, to assemble a face, one needs this. :-P
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Re: How the brain recognizes faces...

Postby OlegTheBatty » Wed Jun 21, 2017 10:54 pm

scrmbldggs wrote:To catch a gal,


Candy is dandy,
but liquor is quicker.
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Thu Jun 22, 2017 11:36 pm

OlegTheBatty wrote:
scrmbldggs wrote:To catch a gal,


Candy is dandy,
but liquor is quicker.
- Ogden Nash

Pourquoi pas les deux?
Image
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby Matthew Ellard » Fri Jun 23, 2017 12:03 am

LunaNik wrote:Who's talking about pron?
Boobs.jpg

You have a lovely pair of boobs. Would you like to see my fantastic tits?
Tits.jpg

(Australia is a classless society.....and we don't mean, as in, social structure.) :D
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Re: How the brain recognizes faces...

Postby scrmbldggs » Fri Jun 23, 2017 12:05 am

:lol:
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Fri Jun 23, 2017 12:11 am

Image
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby Gawdzilla Sama » Thu Jun 29, 2017 2:19 am

If you want to check to see if it's the same person in two different pictures, compare the ears if you can, they're very hard to disguise, complex 3D surfaces.

/derail
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Thu Jun 29, 2017 2:28 am

Gawdzilla Sama wrote:If you want to check to see if it's the same person in two different pictures, compare the ears if you can, they're very hard to disguise, complex 3D surfaces.

/derail
:mrgreen: Mine are doubly hard to disguise, since they're full of holes.

Interestingly, that's the first feature I looked at when that Hillary double was trotted out. Her ears were different. So were her teeth, another difficult feature to disguise on the fly.
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein

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Re: How the brain recognizes faces...

Postby OlegTheBatty » Thu Jun 29, 2017 10:06 pm

LunaNik wrote:
Gawdzilla Sama wrote:If you want to check to see if it's the same person in two different pictures, compare the ears if you can, they're very hard to disguise, complex 3D surfaces.

/derail
:mrgreen: Mine are doubly hard to disguise, since they're full of holes.

Interestingly, that's the first feature I looked at when that Hillary double was trotted out. Her ears were different. So were her teeth, another difficult feature to disguise on the fly.


I would expect that. Flies don't have teeth at all.
. . . with the satisfied air of a man who thinks he has an idea of his own because he has commented on the idea of another . . . - Alexandre Dumas 'The Count of Monte Cristo"

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Re: How the brain recognizes faces...

Postby Gawdzilla Sama » Thu Jun 29, 2017 10:19 pm

OlegTheBatty wrote:
LunaNik wrote:
Gawdzilla Sama wrote:If you want to check to see if it's the same person in two different pictures, compare the ears if you can, they're very hard to disguise, complex 3D surfaces.

/derail
:mrgreen: Mine are doubly hard to disguise, since they're full of holes.

Interestingly, that's the first feature I looked at when that Hillary double was trotted out. Her ears were different. So were her teeth, another difficult feature to disguise on the fly.


I would expect that. Flies don't have teeth at all.

Then how do they say "Help me!!!!!"
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Re: How the brain recognizes faces...

Postby scrmbldggs » Thu Jun 29, 2017 10:25 pm

They use buzzwords?
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Re: How the brain recognizes faces...

Postby Gawdzilla Sama » Thu Jun 29, 2017 10:27 pm

scrmbldggs wrote:They use buzzwords?

"Honey", "vinegar"?
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Re: How the brain recognizes faces...

Postby scrmbldggs » Thu Jun 29, 2017 11:16 pm

Gawdzilla Sama wrote:
scrmbldggs wrote:They use buzzwords?

"Honey", "vinegar"?

Proselytizzzing?
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Re: How the brain recognizes faces...

Postby Gawdzilla Sama » Thu Jun 29, 2017 11:23 pm

scrmbldggs wrote:
Gawdzilla Sama wrote:
scrmbldggs wrote:They use buzzwords?

"Honey", "vinegar"?

Proselytizzzing?

If I am you can zap me.
Chachacha wrote:"Oh, thweet mythtery of wife, at waft I've found you!"

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Re: How the brain recognizes faces...

Postby scrmbldggs » Thu Jun 29, 2017 11:43 pm

Gawdzilla Sama wrote:
scrmbldggs wrote:
Gawdzilla Sama wrote:
scrmbldggs wrote:They use buzzwords?

"Honey", "vinegar"?

Proselytizzzing?

If I am you can zap me.

:hmm: That'd be a Lot to take. :-P
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Re: How the brain recognizes faces...

Postby Nikki Nyx » Fri Jun 30, 2017 1:44 am

OlegTheBatty wrote:
LunaNik wrote:
Gawdzilla Sama wrote:If you want to check to see if it's the same person in two different pictures, compare the ears if you can, they're very hard to disguise, complex 3D surfaces.

/derail
:mrgreen: Mine are doubly hard to disguise, since they're full of holes.

Interestingly, that's the first feature I looked at when that Hillary double was trotted out. Her ears were different. So were her teeth, another difficult feature to disguise on the fly.


I would expect that. Flies don't have teeth at all.

Image
What are the facts? Again and again and again-what are the facts? Shun wishful thinking, ignore divine revelation, forget what “the stars foretell,” avoid opinion, care not what the neighbors think, never mind the unguessable “verdict of history”--what are the facts, and to how many decimal places? You pilot always into an unknown future; facts are your single clue. Get the facts!
—Lazarus Long, from Time Enough for Love, by Robert A. Heinlein


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