[Synaptic reactions of sensomotor cortex neurons to stimulation of emotionally significant brain structures].
The study deals with synaptic and spike responses of neurones in the rat sensorimotor cortex to stimulation of the lateral and medial hypothalamus, locus coeruleus and raphe nuclei. The activity of 57 neurones was recorded, 41 of them intracellularly and quasi-intracellularly, in response to the stimulation of sites in these structures, which were previously identified as "emotionally/ significant. No considerable differences in the effects of the stimulation of different "emotiogenic" zones were found. The stimulation parameters, differing from the "behavioural" ones by a greater strength, elicited in the majority of neurones clear post-synaptic responses, often in the form of EPSP-IPSP. Latencies of the responses varied from 3 to 80 msec. The most stable and pronounced responses were obtained to the stimulation of the lateral hypothalamus. No significant correlations of the latencies of the responses to the stimulation of different "emotiogenic" structures were found.
D000818:Animals; D001931:Brain Mapping; D001933:Brain Stem / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D004597:Electroshock; D004644:Emotions / Q000502:physiology*; D007031:Hypothalamus / Q000502:physiology*; D007033:Hypothalamus, Middle / Q000502:physiology; D008125:Locus Coeruleus / Q000502:physiology*; D008297:Male; D008564:Membrane Potentials; D009044:Motor Cortex / Q000502:physiology; D011903:Raphe Nuclei / Q000502:physiology*; D051381:Rats; D011930:Reaction Time / Q000502:physiology; D013003:Somatosensory Cortex / Q000502:physiology
Sinapticheskie reaktsii neĭronov sensomotornoĭ kory na razdrazhenie émotsional'no znachimykh mozgovykh struktur.