[Projections of the amygdaloid body to the striopallidal structures of cats]

Horseradish peroxidase (HP) was injected (0.2-0.3 mkl, 40%) into the cat striopallidal nuclei. After treating the brain and its sections according to Messulam's technique, it was possible to reveal HP-positive neurons in some structures of the corpus amygdaloideum. When HP was injected into the caudate nucleus, the labelled neurons were found in the basal nucleus of the corpus amygdaloideum. When injected into the globus pallidus--the labelled neurons were revealed in the macrocellular part of the basal nucleus and in the anterior amygdaloid field. Owing to the data obtained, it is possible to suggest that not only the anterior amygdaloid field and the basal nucleus have projections on the putamen, but the medial, central and lateral nuclei of the corpus amygdaloideum, as well.