Color in the Cortex: single- and double-opponent cells

► This is a review of the research during the past 25 years on cortical processing of color signals. ► Twenty-five years ago a modular view of cortical processing predominated. ► Currently, an alternative view, that color and form are linked inextricably in visual cortical processing, is more persua...

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Bibliographic Details
Published in:Vision research (Oxford) 2011-04, Vol.51 (7), p.701-717
Main Authors: Shapley, Robert, Hawken, Michael J.
Format: Article
Language:English
Subjects:
Animals
Color Perception - physiology
Context
Double-opponent
Humans
Magnetic Resonance Imaging - methods
Modules
Neurons - physiology
Photic Stimulation - methods
Population coding
Primates
Single-opponent
Visual Cortex - physiology
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Summary:► This is a review of the research during the past 25 years on cortical processing of color signals. ► Twenty-five years ago a modular view of cortical processing predominated. ► Currently, an alternative view, that color and form are linked inextricably in visual cortical processing, is more persuasive than it seemed in 1985. ► The role of the primary visual cortex, V1, in color processing now seems much larger than it did in 1985. ► The new neurophysiological results have highlighted the importance of double-opponent cells in V1. ► Another new concept is population coding of hue, saturation, and brightness in cortical neuronal population activity. This is a review of the research during the past 25 years on cortical processing of color signals. At the beginning of the period the modular view of cortical processing predominated. However, at present an alternative view, that color and form are linked inextricably in visual cortical processing, is more persuasive than it seemed in 1985. Also, the role of the primary visual cortex, V1, in color processing now seems much larger than it did in 1985. The re-evaluation of the important role of V1 in color vision was caused in part by investigations of human V1 responses to color, measured with functional magnetic resonance imaging, fMRI, and in part by the results of numerous studies of single-unit neurophysiology in non-human primates. The neurophysiological results have highlighted the importance of double-opponent cells in V1. Another new concept is population coding of hue, saturation, and brightness in cortical neuronal population activity.
ISSN:0042-6989
1878-5646
DOI:10.1016/j.visres.2011.02.012