[Changes in the excitability of the motor cortex during elaboration of conditioned reflex switching].

In the process of elaboration of conditioned transswitching of classical and instrumental alimentary and acid defensive reflexes, there was a change of excitability in the cortical projection of dog's forepaw. When flexor reaction elicited by stimulation of the motor cortex is used as signal stimulus, the character of functional reorganization in its cortical projection proves to be principally the same as at special elaboration of the motor cortex was used as a signal stimulus the thresholds of flexor reaction increased approximately equally in both experimental situations.