[Impulse activity of neurons in the rabbit sensory-motor cortex during recruitment]

In unanesthetized rabbits, recruiting response to low-frequency stimulation of the thalamic center medial was followed by a change in the overall level of neuronal activity in the sensory-motor cortex lasting throughout the stimulation, and a change in the firing rate related to spindles of the response. Adoption of the thalamic stimulation rhythm by cortical neurons could be observed either during the whole period of stimulation or in relation to phases of the recruiting response. These factors of influence of unspecific thalamic structures on neuronal activity in the hemispheres during recruiting response are relatively independent of each other. In contrast with data obtained in anesthetized animals, in chronic conditions unspecific structures exert heterogeneous mainly inhibitory influence on the spike activity of cortical neurons.