Chromatic Patterns of Cone Photoreceptors

The operations of vertebrate visual neurons must eventually be expressed i n terms of the spectral classes and spatial distributions of photoreceptors that constitute inputs to those neurons. By using acytochemical probe that permits visualization of the responses of cone photoreceptors to light stimulation, it has been possible to describe the spectral classes and spatial patterns of cones in a lower vertebrate, the goldfish, and in a primate, the baboon. This information is an important first step in analyzing the connections between cones and retinal neurons.