Processing of color signals in the monkey visual cortex

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To investigate how color information is represented in the visual cortex and how it is transformed across different areas, we developed new color stimulus set, and examined quantitatively the color selectivity of neurons in the visual cortex of the monkey. We found that the dependence of the color selectivity on the luminance contrast differs across different cortical areas. Mapping neural responses densely on the chromaticity diagram is very useful to characterize the sharp color selectivity of higher cortical visual areas.