The spatial transformation of color in the primary visual cortex of the macaque monkey.

Published

Journal Article

Perceptually, color is used to discriminate objects by hue and to identify color boundaries. The primate retina and the lateral geniculate nucleus (LGN) have cell populations sensitive to color modulation, but the role of the primary visual cortex (V1) in color signal processing is uncertain. We re-evaluated color processing in V1 by studying single-neuron responses to luminance and to equiluminant color patterns equated for cone contrast. Many neurons respond robustly to both equiluminant color and luminance modulation (color-luminance cells). Also, there are neurons that prefer luminance (luminance cells), and a few neurons that prefer color (color cells). Surprisingly, most color-luminance cells are spatial-frequency tuned, with approximately equal selectivity for chromatic and achromatic patterns. Therefore, V1 retains the color sensitivity provided by the LGN, and adds spatial selectivity for color boundaries.

Full Text

Duke Authors

Cited Authors

  • Johnson, EN; Hawken, MJ; Shapley, R

Published Date

  • April 2001

Published In

Volume / Issue

  • 4 / 4

Start / End Page

  • 409 - 416

PubMed ID

  • 11276232

Pubmed Central ID

  • 11276232

International Standard Serial Number (ISSN)

  • 1097-6256

Digital Object Identifier (DOI)

  • 10.1038/86061

Language

  • eng

Conference Location

  • United States