| Abstract: | Efferent connections of the caudate nucleus were studied experimentally in 13 cats after electrolytic destruction of various parts of it. Preparations were stained by the methods of Nauta, Knook, and Fink-Heimer. Direct caudatocortical connections with a definite topical organization were discovered: a ventrodorsal projection in the cortex corresponds to a rostrocaudal and ventrodorsal distribution of neurons in the caudate nucleus. Striatocortical fibers are few in number and very thin. Their predeterminals were found in both the deep and the superficial layers of the cortex on granule cells and pyramidal cells of different sizes. The results are in agreement with those of most of the recent physiological investigations indicating a close functional connection between the caudate nucleus and the cortex. |
