A DETAILED study of the laminar organization in the lateral geniculate body of primates has been presented in an earlier paper.1 In the present paper an attempt will be made to relate the distribution of color sensitivity in the visual field to the laminar pattern in the human geniculate nucleus.
The distribution of the transneuronal degeneration in the lateral geniculate body after localized retinal lesions, affecting portions of all three cell laminas related to each eye, has led to the inference2 that the conducting unit in the optic nerve and tract from the retina is a three fiber unit. It has also been suggested3 that the three fiber unit and the trilaminar pattern in the geniculate body may have a relation to the three fundamental colors of the Young-Helmholtz color theory. Some of the indirect evidence in favor of this thesis has been presented elsewhere.4 It