[Slow potentials and the impulse activity of cerebral cortex neurons following elaboration of internal inhibition].

The development of all studied kinds of internal inhibition in rabbits is accompanied by an enhanced phasic state, alternation of activation and inhibition in the responses of the visual area neurones, and enhanced late components of evoked potentials to flashes. During further intensification of inhibition, generalized polyrhythmic potential oscillations develop, which are in correspondence with chaotic or irregular group discharges of units in the visual and sensorimotor cortical areas, separated by inhibitory pauses. It has been concluded that enhanced hyperpolarization plays a considerable part in the development of internal inhibition; it may be local, predominantly in the conditioned stimulus analyser, or generalized in the case of a stronger inhibition comprising many brain structures.