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Science 18 November 1977:
Vol. 198. no. 4318, pp. 753 - 755
DOI: 10.1126/science.910161
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Articles

Science, Vol 198, Issue 4318, 753-755
Copyright © 1977 by American Association for the Advancement of Science

articles

Trichromatic vision in the cat

J Ringo, ML Wolbarsht, HG Wagner, R Crocker, and F Amthor

Many cat retinal ganglion cells (types X, Y, and W) have inputs from three separate cone systems. Those with peak sensitivities at 450 and 555 nanometers have been previously shown. A gamma max cone with a peak sensitivity of 500 nanometers can be differentiated from other cones by spectral sensitivity and from rods by receptive field differences, functioning above rod saturation levels, and by cone-rod breaks in the dark-adaptation curves. The similarity of the three-cone cat retina to the extramacular retina of the rhesus monkeys suggests that the cat may have photopic trichromatic vision.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)