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Retinal ganglion cells are the first real neurons in the visual system, and they transmit the visual information to the brain. The retina processes the visual signals, and they determine the response properties of the retinal ganglion cells and the constraints for color vision.
Physiology of Retinal Ganglion Cells
This entry is only concerned with primate retinal ganglion cells. The morphology and physiology of ganglion cells in other mammals and vertebrates may be quite distinct. Trichromatic theories of color mixture have had a tendency to overemphasize the role that L-, M-, and S-cone receptors have for color perception.The realization, however, that these physiological units can only explain the laws of additive color mixture and color matching (metamerism) has led to an end of this bias. Modern cone-opponent color vision models assume antagonistic inputs of two or more cone types to the receptive field of retinal ganglion cells (e.g., +L-center −M-surround, giving an...
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