[The descending cortical pathways of the frontal lobe to the nuclei of the hypothalamic mamillary bodies in human craniocerebral trauma].

Structural organization of conducting ways of the frontal lobe cortex to hypothalamic nuclei was studied in sections of brain from 5 patients who died in short terms after craniocerebral trauma and during the experiment in 5 macaque rhesus monkeys with unilateral destruction of different cortical fields of frontal area. Series of brain sections were processed using silver nitrate impregnation after Bielschowsky [correction of Bilshovsky] with counterstaining of nuclear structures after Kavamura with cresyl violet. The presence of direct corticohypothalamic ways from the cortex of the orbital surface of inferior (field 47 and its subfields) and superior (field 11) frontal gyri and frontal pole (field 10) to nuclei of mamillary complex and lateral hypothalamus was established.

[Descending pathways of the cerebral cortex to nuclear structures of the extrapyramidal system].

The connections of the neocortical structures in animal and human brains with the complex of nuclear formations of the extrapyramidal system have been studied. The authors present comparative characteristics and distribution of these connections in the nuclear and other formations of the extrapyramidal system. Both mediator (via the thalamus) and direct cortical projections toward the nuclei of the extrapyramidal system in primates, especially in humans, have been found to increase.