title: The influence of the stimulation of the CA3 field of the dorsal hippocampus on the motor polarization dominant in rabbits.
abstract: The influence of the stimulation of the CA3 field of the dorsal hippocampus on the course of a motor polarization dominant produced by the action of a constant current on the sensorimotor area of the rabbit cortex was investigated. It was demonstrated that stimulation of the hippocampus by a 1 mA current (0.5 msec; 100 Hz; 0.2 sec) against the background of the optimum of the dominant elicits its [the dominant's] inhibition, which is manifested in the suppression of the motor "dominant" reaction of the forelimb in response to test stimuli, and in the abolition of the coherent associations of the theta-range electrical activity of the sensorimotor cortex and the CA3 field of the dorsal hippocampus. On the other hand, stimulation of the hippocampus with a weak current (30-50 microA; 0.5 msec; 30 Hz; 0.2 sec) at the optimum of the dominant reinforces it [the dominant], eliciting a movement of the "dominant" extremity, and against the background of an unstable dominant promotes it activation and stabilization and restores the dominant in the following days during its extinction.
authors.affiliation: Institute of Higher Nervous Activity and Neurphysiology, Academy of Sciences of the USSR, Moscow.
authors.forename: E V
authors.initials: EV
authors.lastname: Rusinova
mesh_terms: D000200:Action Potentials; D000818:Animals; D004558:Electric Stimulation; D005071:Evoked Potentials; D006624:Hippocampus / Q000502:physiology*; D009044:Motor Cortex / Q000502:physiology*; D011817:Rabbits; D012018:Reflex / Q000502:physiology*