THALAMIC NUCLEI OF PITHECUS (MACACUS) RHESUS

Abstract

In recent years a considerable amount of research has been done on the classification, delimitation and cyto-architecture of the nuclear masses of the dorsal thalamus. This has been done chiefly on lower mammals and on the lower primates, so that at present there exists a highly standardized descriptive concept of this formerly obscure region of the brain. As yet this work has not been carried into the higher primates and at the present we are still dependent on the older authors and older systems of nuclear classification for interpretations of the conditions in these forms and in particular in man. Since the work of Mann (1905), Vogt (1909), Malone (1910), Neiding (1911), and Friedemann (1911), little attention has been given to the primate thalamus till the recent work of Pines (1927), who followed closely the precepts of the former authors. The most recent works on the lower primates and closely