[Coherent analysis of the EEG during development of trace processes of the polarization dominant in the rabbit]

Abstract

By the method of spectral-correlation analysis, the dynamics was studied of changes in intercentral relations of electrical activity in the sensorimotor and premotor cortices of both cerebral hemispheres during formation, course, recovery and extinction of motor dominant created by a single action of DC anode in rabbits sensorimotor cortex. The motor dominant is capable to be preserved during the test for a long time after DC switching off and to recover in subsequent days under the action of testing stimuli. It should be noted that the recovery of the structure of intercentral relations of electrical brain activity, characteristic of dominant state, takes place much earlier than the motor "dominant" reaction.