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Science. 2001 Jan 12;291(5502):312-6.

Categorical representation of visual stimuli in the primate prefrontal cortex.

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1
Center for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Abstract

The ability to group stimuli into meaningful categories is a fundamental cognitive process. To explore its neural basis, we trained monkeys to categorize computer-generated stimuli as "cats" and "dogs." A morphing system was used to systematically vary stimulus shape and precisely define the category boundary. Neural activity in the lateral prefrontal cortex reflected the category of visual stimuli, even when a monkey was retrained with the stimuli assigned to new categories.

PMID:
11209083
DOI:
10.1126/science.291.5502.312
[Indexed for MEDLINE]
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