Selective chromatic adaptation in primate photoreceptors

Abstract

The size of the late receptor potential is used as a response index to investigate selective chromatic adaptation in the cone photoreceptors of cynamolgous macaque monkeys. Large effects, consistent with the classical trichromatic view, are found. The responses to light pulses of red and green cones are of exactly the same shape; those from blue cones appear to have a longer time constant. The results indicate that the relative contributions of potentials of the three kinds of cones to the measured late receptor potential are unequal.