A spectral correlation analysis of the electrical activity of the sensorimotor cortex and the medial geniculate body in the presence of a motor polarizational dominant.

The dynamics of the changes in the structure of the coherence relationships of the electrical activity of the sensorimotor cortex and the medial geniculate body (MGB) of the rabbit in the presence of a motor polarizational dominant created by the action of a direct current anode on the region of the sensorimotor cortex were investigated by the method of spectral correlation analysis. It was demonstrated that, in addition to an increase in the components of the delta range in the interstimulus intervals in the presence of a dominant, a clear maximum in the alpha rhythm range in the electrical activity of the MGB of the "dominant" hemisphere appears in the power spectra of the electrical activity of the MGB during the action of an acoustic signal. An increase in the coherence of the delta range of the electrical activity of the MGB and of the sensorimotor cortex in the "dominant" half of the brain is manifested exclusively in the period of action of the acoustic stimulus.