Olfactory and visceral projections to the paraventricular nucleus.
Electrophysiological studies were performed to determine if neurons of the paraventricular nucleus (PVN) which receive inputs from the stomach via vagal afferents also respond to nucleus of the solitary tract (NTS) and olfactory bulb (OB) stimulation. We found that the NTS, OB stimulation, and gastric distension depress the firing frequency of PVN neurons. The pathway from the NTS to the PVN contains larger fibers than the projection from the PVN to the NTS.
Guevara-Aguilar
R
R
Departamento de Fisiologia, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, D.F.
Jimenez-Montufar
L L
LL
Garcia-Diaz
D E
DE
Wayner
M J
MJ
Armstrong
D L
DL
D000200:Action Potentials; D000818:Animals; D004558:Electric Stimulation; D008526:Medulla Oblongata / Q000502:physiology*; D009434:Neural Pathways / Q000502:physiology; D009830:Olfactory Bulb / Q000502:physiology*; D010286:Paraventricular Hypothalamic Nucleus / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains; D014781:Viscera / Q000294:innervation*