Influence of substantia innominata neuronal activity on neocortex neuronal reactions during conditioned reflex.
Impulse activity of substantia innominata (SI) and motor cortex neurons was studied in cats during conditioned placing with food reinforcement. It was shown that SI neurons have been activated first directly by sound stimuli and later by food reward. Stimulation of SI did not change the background activity of neocortex neurons but promoted the modulation of impulse response to conditioned stimuli. The modulating effect of the SI has a mainly excitatory character, that manifested itself either in a change and increase of the impulse responses of cortical neurons which responded initially to sound stimuli, or in the appearance of impulse responses in those neurons which showed no initial reaction to conditioned sound stimuli.
Storozhuk
V M
VM
Department of Physiology of Higher Nervous Activity, A.A. Bogomoletz Institute of Physiology, Ukrainian Academy of Sciences, Kiev, U.S.S.R.
Zinjuk
L E
LE
D000161:Acoustic Stimulation; D000818:Animals; D002415:Cats; D003214:Conditioning, Classical; D004558:Electric Stimulation; D009044:Motor Cortex / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D012054:Reinforcement, Psychology; D013003:Somatosensory Cortex / Q000502:physiology*; D013377:Substantia Innominata / Q000502:physiology*