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  • Title: [Changes in the motor response threshold to direct electric stimulation of the motor cortex during elaboration of conditioned reflex switching-over].
    Author: Davydova EK.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 1981; 31(6):1141-8. PubMed ID: 7331501.
    Abstract:
    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).
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