Ev. Rusinova, INFLUENCE OF MEDIAL GENICULATE STIMULATIO N ON MOTOR POLARIZATION DOMINANT IN RABBITS, Zurnal vyssej nervnoj deatelnosti im. I.P. Pavlova, 46(1), 1996, pp. 100-107
We studied the influence of stimulation of the medial geniculate body
(MGB) on the course and recovery of the motor polarization dominant cr
eated by the action of DC anode on the rabbit's right sensorimotor cor
tex. Electrical activity of the sensorimotor cortex and MGB was record
ed in both cerebral hemispheres as well as mechanograms of both the fo
relimbs. It was shown that MGB stimulation at the background of the do
minant optimum reinforced it eliciting a movement of the <<dominant>>
forelimb. During geniculate stimulation spectral power of the electric
al activity of both the structures of the right hemisphere increased i
n the delta-1 range. Coherence spectra displayed an increase of the me
an coherence level in the same delta-1 range. These phenomena were cha
racteristic 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.