Document Detail

Processing of color, form, and motion in macaque area V2.
MedLine Citation:
PMID:  8730997     Owner:  NLM     Status:  MEDLINE    
We investigated the representation of color in cortical area V2 of macaque monkeys, and the association of color with other stimulus attributes. We measured the selectivity of individual V2 neurons for color, motion, and form. Most neurons in V2 were orientation selective, about half of them were selective for color, and a minority of cells (about 20%) were selective for size or direction. We correlated these physiological measurements with the anatomical location of the cells with respect to the cytochrome oxidase (CO) compartments of area V2. There was a tendency for color-selective cells to be found more frequently in the thin stripes, but color-selective cells also occurred frequently in thick stripes and inter-stripes. We found no difference in the degree of color selectivity between the different CO compartments. Furthermore, there was no negative correlation between color selectivity and selectivity for other stimulus attributes. We found many cells capable of encoding information along more than one stimulus dimension, regardless of their location with respect to the CO compartments. We suggest that area V2 plays an important role in integrating information about color, motion, and form. By this integration of stimulus attributes a cue invariant representation of the visual world might be achieved.
K R Gegenfurtner; D C Kiper; S B Fenstemaker
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Visual neuroscience     Volume:  13     ISSN:  0952-5238     ISO Abbreviation:  Vis. Neurosci.     Publication Date:    1996 Jan-Feb
Date Detail:
Created Date:  1996-11-07     Completed Date:  1996-11-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8809466     Medline TA:  Vis Neurosci     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  161-72     Citation Subset:  IM; S    
Howard Hughes Medical Institute, New York University, New York, USA.
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MeSH Terms
Color Perception / physiology*
Form Perception / physiology*
Macaca fascicularis
Motion Perception / physiology*
Neurons / physiology
Photic Stimulation
Visual Cortex / physiology*

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