[Changes in the motor response threshold to direct electric stimulation of the motor cortex during elaboration of conditioned reflex switching-over].
During elaboration of switching-over of an alimentary salivary conditioned reflex to a defensive one in dogs, with foreleg passive flexion as a signal stimulus, excitability changes of opposite signs appeared in the cortical representation of the left foreleg. At the stage of elaborated switching-over, the threshold of the flexor reaction to a direct stimulation of the motor cortex became lower in the alimentary experimental situation (passive rise--milk) and rose in the defensive situation (passive rise--acid).
D000818:Animals; D003214:Conditioning, Classical / Q000502:physiology*; D004285:Dogs; D004558:Electric Stimulation; D005502:Food; D009044:Motor Cortex / Q000502:physiology*; D010146:Pain; D014163:Transfer, Psychology
Izmenenie poroga dvigatel'noĭ reaktsii na priamoe élektricheskoe razdrazhenie motornoĭ kory pri vyrabotke uslovnoreflektornogo perekliucheniia.