[Functional organization of the tecto-thalamic link of the transcollicular afferent channel of the visual analyzer].

The distribution of the evoked potentials in pulvinar, lateralis posterior, posterior, suprageniculate and dorsolateral nuclei of the thalamus was studied on anesthetized cats after electric stimulation of the optic tract and the surface layers of the superior colliculus. It is found that the functional projections of the superior colliculus and the optic tract to the posterior thalamus differ from each other. A suggestion is made that the transcollicular afferent channel of the visual system is not reduced during evolution.