[Projections of the visceral and somatic afferent systems to identified neurons of the supraoptic nucleus].
Antidromic identification of the hypothalamic supraoptic nucleus' neurosecretory cells in cats in the course of stimulation of the posterior hypophysis aided to study the possibility and degree of modulation of the unit activity by ascending visceral and somatic afferent signals during stimulation of the splanchnic and sciatic nerves. the data obtained revealed that the major part of the neurosecretory neurons cannot be activated by means of the afferent signals. The projections of visceral and somatic afferent systems represented by the splanchnic and sciatic nerves, spread over to the nonroendocrinal cells of the hypothalamic supraoptic nucleus. The functional role of peripheral afferents in modulation of the hypothalamic neuroendocrinal neurons activity, is discussed.
D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D005071:Evoked Potentials; D009474:Neurons / Q000502:physiology*; D009490:Neurosecretory Systems / Q000502:physiology; D010904:Pituitary Gland, Posterior / Q000502:physiology; D012584:Sciatic Nerve / Q000502:physiology*; D013153:Splanchnic Nerves / Q000502:physiology*; D013495:Supraoptic Nucleus / Q000502:physiology*
Issledovanie proektsiĭ vistseral'nykh i somaticheskikh afferentnykh sistem k identifitsirovannym neĭronam supraopticheskogo iadra.