[Participation of interoceptive afferent signals in the polymodal reactions of superior colliculus neurons in cats].
Stimulation of the vagal nerve in unanesthetized immobilized cats evoked marked responses in 43% of neurons of the superior colliculus. In 60% of the responses the changes in the spike activity were of tonic character. After stimulation with single stimuli inhibitory effects prevailed; in half of cases distinct initial inhibition of discharges lasting for 180-1700 ms was observed. Phasic responses with an initial period of activity occurred only in 9-11% of neurons. On the contrary somatic stimuli provoked mainly phasic reactions of activation type. Most of the investigated neurons were bimodal and often the time pattern of the responses depended on the modality of stimulation.
D000818:Animals; D001931:Brain Mapping; D002415:Cats; D004558:Electric Stimulation; D004597:Electroshock; D009434:Neural Pathways / Q000502:physiology; D011826:Radial Nerve / Q000502:physiology; D012584:Sciatic Nerve / Q000502:physiology; D012677:Sensation / Q000502:physiology*; D013477:Superior Colliculi / Q000502:physiology*; D014630:Vagus Nerve / Q000502:physiology; D014796:Visual Perception / Q000502:physiology
Uchastie interotseptivnykh afferentnykh signalov v polimodal'nykh reaktsiiakh neĭronov perednego dvukholmiia koshki.