Build-A-Face: Brains encode faces piece by piece

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.

 

 

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