[Functional organization of the rabbit hypothalamo-paleocortical system].
Investigation of the ascending hypothalamic connections with principal paleocortical centers (the olfactory tubercule, prepiryform cortex) indicates that the most short latent, poorly exhausted by rhythmic stimulation or by neuronal reactions EPs in these olfactory centers are elicited by stimulation of phylogenetically ancient hypothalamic areas of the anterior LPO and lateral LHA. It was also shown that the third deep layer of the prepiryform cortex is the main center for total ascending afferentation from these ancient parts of the hypothalamus. EPs and cellular responses to stimulation of phylogenetically new hypothalamic regions could be revealed with difficulties and were characterized by long latent periods or high degree of exhaustion by rhythmic stimulation. Paleo-hypothalamic system in the rabbit exhibits strict organization of functional connections. It was demonstrated that during stimulation of the main olfactory centers of the forebrain, EPs and neuronal responses originate chiefly in the anterior (LPO) and in the narrow zone of the lateral hypothalamus. Under the conditions used, cellular responses in VMH and SMA were not revealed.
D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D001931:Brain Mapping; D002490:Central Nervous System / Q000502:physiology*; D004558:Electric Stimulation; D005071:Evoked Potentials; D007031:Hypothalamus / Q000502:physiology*; D007033:Hypothalamus, Middle / Q000502:physiology; D007034:Hypothalamus, Posterior / Q000502:physiology; D008032:Limbic System / Q000502:physiology*; D009830:Olfactory Bulb / Q000502:physiology; D009833:Olfactory Pathways / Q000502:physiology*; D010802:Phylogeny; D011301:Preoptic Area / Q000502:physiology; D011817:Rabbits
Funktsional'naia organizatsiia gipotalamo-paleokortikal'noĭ sistemy krolika.