Abstract: | Neuronal populations which are sources of fiber tracts to the amygdala and auditory cortexin the posterior group of thalamic nuclei and adjacent structures of the cat mesencephalon were studied by the retrograde axonal transport of horseradish peroxidase method. It was shown that the peripeduncular, suprageniculate, and subparafascicular nuclei form numerous projections to the amygdala. In all parts of the posterior group of thalamic nuclei, common zones of localization of sources of ascending pathways into the amygdala and auditory cortex were demonstrated. A powerful source of projections to the amygdala from the caudal part of the medial geniculate body was discovered.A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 16, No. 2, pp. 213–224, March–April, 1984. |