V I Khorevin

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Interaction between impulse activities evoked by a click and contralateral forepaw electrical stimulation was studied in 78 neurons of magnocellular part of the medial geniculate body in cats immobilized with myorelaxine. Among the studied neurons 33 responded by impulse activity both to a click and forepaw stimulation, 25--exclusively to a click and(More)
The responses of 150 neurons of the magnocellular division of the medial geniculate body (MGB) to sound click and to contralateral forepaw electrical stimulation were studied in cats immobilized with myorelaxine. 68% of the studied neurons had bimodal responses, 16.6% of neurons responded only to click, and 15.4% - only to forepaw stimulation. The responses(More)
Changes in conditioned reflex spike activity of neurons in the sensorimotor cortex were studied during microiontophoretic application of agonists and antagonists of glutamate and GABAergic transmission. The results of these experiments showed that the glutamate ionotropic receptors (AMPA and NMDA) of neurons in the sensorimotor cortex were intensely(More)
The formation of selective sensitivity to the movement of the environment at different velocities still remains an unsolved problem. It is assumed that the basis of the creation of such sensitivity can be as processes of inhibition and facilitation at different levels of the visual system. We studied the role of GABA-ergic inhibition in shaping the velocity(More)
The dopamine modulation of microiontophoretic application of antagonists of glutamate metabotropic synaptic transmission was studied in the sensory motor cortex of awake cats during instrumental conditioned reflex. The substances depressed the background and intensity of evoked impulse activity of pyramidal neurons of the sensory-motor cortex and provoked(More)
Changes in conditioned impulse reactions of neurons in sensorimotor cortex were studied during microiontophoretic application of glutamatergic and GABA ergic agonistic and antagonistic drugs. It was shown that ionotropic glutamate receptors (AMPA and NMDA) are activated by a conditioned stimulus. Not only large pyramidal neurons of deep cortical layers but(More)
The effects of iontophoretic application of dopamine and selective D1 or D2 dopamine receptor agonists and antagonists on impulse activity of neurons of the deep layers of the sensorimotor cortex of cat were investigated during performance of a conditioned paw movement task. The application of dopamine, Quinpirole (selective D2 receptor agonist) or SKF(More)