[The effect of stimulation of the medial geniculate body on the motor polarization dominant in rabbits].

We studied the influence of stimulation of the medial geniculate body (MGB) on the course and recovery of the motor polarization dominant created by the action of DC anode on the rabbit's right sensorimotor cortex. Electrical activity of the sensorimotor cortex and MGB was recorded in both cerebral hemispheres as well as mechanograms of both the forelimbs. It was shown that MGB stimulation at the background of the dominant optimum reinforced it eliciting a movement of the "dominant" forelimb. During geniculate stimulation spectral power of the electrical activity of both the structures of the right hemisphere increased in the delta-1 range. Coherence spectra displayed an increase of the mean coherence level in the same delta-1 range. These phenomena were characteristic for the dominant state. On the next after exposure of the cortex to DC, the dominant recovered after application of 7--10 trials of geniculate stimulation.