[Thalamo-amygdalar connections in the cat brain].

Afferent connections of the cat amygdalar nuclei with the thalamic structures were studied by Nauta's method; simultaneously, geometrical features of the afferent fibres in amygdala were investigated by Golgi's method and its synaptic architectonics was examined by Golgi--Deineka's method. No pathways were demonstrated from the medial line nuclei (paraventricular, interanteromedial, rhomboid, central medial and reunial), from intralaminar nuclei (central lateral, paracentral and parafascicular) and from the lateral part of the thalamic medio-dorsal nucleus to the amygdala. From the medial part of the thalamic medio-dorsal nucleus into the basal-lateral nuclei of the amygdala (mainly into the large cells of the basal nucleus) come a great number of lemnisc-like fibres which form at the end a thick brush from very fine fibrillae having beady thickenings and connected with the neuronal dendrites of the amygdala.