[The laminar distribution of the neuronal sources of afferent fibers to the neocortex in the caudal regions of the limbic cortex in rats and cats].

Laminar distribution of neurones in the caudal limbic cortex, which form projections to the neocortex, has been studied by axonal transport of HRP. It was shown that the associative parietal cortex (field 7) receives the greatest part of limbic afferents from neurones of layer V. It is suggested that field 7 is included in the limbic efferent system together with subcortical structures of the brain. Projections of the limbic cortex to the field 7 originate partly from associative neurones of layer III which are more numerous in cats than in rats.