[Organization of retinal and lateral geniculate body connections with the hypothalamus in cats]

In order to clarify connective relations between the optic system and activating formations, the pathways from the retina and the external geniculate body to the hypothalamus were investigated in the cat. Methods of Fink--Heimer and of I. V. Victorov were applied. The retina and the dorsal nucleus of the external geniculate body were stated to have efferent connections with the same nuclei in the anterior hypothalamus. Medial and posterior hypothalamus do not accept such connections. Retino-hypothalamic and geniculate hypothalamic pathways are demonstrated to terminate in the supraoptic and suprachiasmic nuclei. These pathways are bilateral and quantitatively equivalent.