Form representation in monkey inferotemporal cortex is virtually unaltered by free viewing

TitleForm representation in monkey inferotemporal cortex is virtually unaltered by free viewing
Publication TypeJournal Article
Year of Publication2000
AuthorsDiCarlo JJ, Maunsell JH
JournalNature Neuroscience
Volume3
Pagination814–821
ISSN1097-6256
KeywordsAnimals, Conditioning {(Psychology), Form Perception, Macaca mulatta, Male, Neurons, Ocular, Pattern Recognition, Photic Stimulation, Saccades, Temporal Lobe, Visual, Visual Cortex, } Fixation
Abstract

How are objects represented in the brain during natural behavior? Visual object recognition in primates is thought to depend on the inferotemporal cortex {(IT).} In most neurophysiological studies of {IT,} monkeys hold their direction of gaze fixed while isolated visual stimuli are presented (controlled viewing). However, during natural behavior, primates visually explore cluttered environments by changing gaze direction several times each second (free viewing). We examined the effect of free viewing on {IT} neuronal responses in monkeys engaged in a form-recognition task. By making small, real-time stimulus adjustments, we produced nearly identically retinal stimulation during controlled and free viewing. Nearly 90% of neuronal responses were unaffected by free viewing, and average stimulus selectivity was unchanged. Thus, neuronal representations that likely underlie form recognition are virtually unaltered by free viewing.

URLhttp://dicarlolab.mit.edu/sites/dicarlolab.mit.edu/files/pubs/DiCarlo-Maunsell2000.pdf
DOI10.1038/77722
Refereed DesignationRefereed

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