A CONTRIBUTION TO THE STUDY OF COLOR VISION IN CAT

Abstract

By means of stainless steel electrodes with point diameters of less than 2 micra unit spikes were recorded from the dorsal lateral geniculate body and visual cortex of the cat. Single line monochromatic light, blue, yellow and green, applied for 20 msec, were used as the physiological stimuli. Under these conditions the patterns of unit spike activity were remarkably similar from color to color; i.e. there was no physiological evidence of color discrimination (or differential spectral sensitivity) in the central visual apparatus of the cat.