Electrophysiological identification of neurones of paraventricular nucleus sending axons to both the neurohypophysis and the medulla in the rat.
Neurons within the hypothalamic paraventricular nuclei (PVN) have been antidromically invaded following electrical stimulation within the pons and medulla of rats. These neurones are dispersed throughout the PVN and are often found near neurones antidromically invaded only from the pituitary salk. In addition, a small number of PVN neurones have been found that were antidromically invaded from both the caudal brain and the pituitary stalk. The functional significance of these neurons is unknown at the moment, but the possibility of feedback control of the neurohypophysis must be considered.
D000818:Animals; D001369:Axons / Q000502:physiology*; D004558:Electric Stimulation; D005071:Evoked Potentials; D005246:Feedback; D007031:Hypothalamus / Q000166:cytology*; D008297:Male; D008526:Medulla Oblongata / Q000166:cytology*; D009474:Neurons / Q000502:physiology; D010286:Paraventricular Hypothalamic Nucleus / Q000166:cytology*; D010904:Pituitary Gland, Posterior / Q000166:cytology*; D051381:Rats