[Analysis of the activity of neuronal populations in the brains of rabbits during adaptive self-regulation].
The multiple unit (of 2 to 10 elements) activity of the somatosensory cortex was studied with the help of autospectral analysis in a rabbit learned with biofeedback technique from changes of the neuronal current discharge frequency. The background activity of neuronal pools is characterized by several basic profiles of frequency spectra. In most neuronal pools, after 4 to 12 min. of stimulation (below-threshold frequency is reinforced), the frequency of neuronal discharges is steadily enhanced, and the number of pain stimulations correspondingly diminishes by 30 to 50% for a few minutes or longer -- the result of learning. The appearance and increase in the autospectra of a relatively higher frequency component (0.35 to 0.6 c/s) during adaptive reorganizations reflects the influence of an effective feedback control; enhancement of the power of oscillations with a 0.05 to 0.07 c/s frequency testifies to a process of search by the system of the state extremum.
D000222:Adaptation, Physiological; D000818:Animals; D001362:Avoidance Learning / Q000502:physiology*; D001676:Biofeedback, Psychology / Q000502:physiology*; D004594:Electrophysiology; D010146:Pain; D011817:Rabbits; D013003:Somatosensory Cortex / Q000502:physiology*
Analiz aktivnosit neĭronnykh populiatsiĭ golovnogo mozga krolika v protsesse adaptivnoĭ samoreguliatsii organizma.