The color-opponent and broad-band channels of the primate visual system

doi:10.1016/0166-2236(90)90117-S

Trends in Neurosciences

Volume 13, Issue 10, October 1990, Pages 392-398

https://doi.org/10.1016/0166-2236(90)90117-S Get rights and content

Abstract

Physiological, anatomical and psychophysical studies have identified several parallel channels of information processing in the primate visual system. Two of these, the color-opponent and the broad-band channels, originate in the retina and remain in part segregated through several higher cortical stations. To improve understanding of their function, recent studies have examined the visual capacities of monkeys following selective disruption of these channels. Color vision, fine- but not coarse-form vision and stereopsis are severely impaired in the absence of the color-opponent channel, whereas motion and flicker perception are impaired at high but not low temporal frequencies in the absence of the broad-band channel. The results suggest that the color-opponent channel extends the range of vision in the spatial and wavelength domains, and that the broad-band channel extends it in the temporal domain. Lesion studies also indicate that these channels must reach higher cortical centers through extrastriate regions other than just area V4 and the middle temporal area, and that the analysis performed by these two regions cannot be uniquely identified with specific visual capacities.

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Citation Excerpt :
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Trends in Neurosciences

ViewpointThe color-opponent and broad-band channels of the primate visual system

Abstract

Vision Res.

Trends Neurosci.

Trends Neurosci.

Neuroscience

Vision Res.

Vision Res.

Vision Res.

Vision Res.

Vision Res.

Vision Res.

Science

Nature

J. Neurophysiol.

Science

J. Physiol. (London)

J. Physiol. (London)

J. Neurophysiol.

J. Physiol. (London)

Eur. J. Neurosci.

Eur. J. Neurosci.

Nature

J. Physiol. (London)

Science

J. Physiol. (London)

J. Neurophysiol.

J. Neurosci.

Invest. Ophthalmol.

Nature

Science

J. Neurosci.

Exp. Brain Res.

Nature

Nature

Viewpoint
The color-opponent and broad-band channels of the primate visual system