[Analysis of the reaction between nerve structures of the auditory, sensomotor, and visual zones of the cat neocortex according to summated evoked potentials to heteromodal stimuli].

Short-latency EPs in the auditory, sensorimotor and visual cat neocortical areas were analyzed in chronic experiments with interaction of two stimuli of different modalities (click plus electro-cutaneous stimulation of the circular eye muscle). In the auditory cortex the "click plus current" combination caused a blockade of the EP to the electric stimulation in the case of short intervals; with an inverse stimuli sequence "current plus click", and with all intervals, the EPs to clicks were recorded in an unreduced form. In the sensorimotor and visual areas, after both sequences of stimuli the EPs to the second stimulus were commensurable with the control ones. A conclusion is made on a difference in organization of sensory inputs for sound and electro-cutaneous stimuli of the studied cortical areas: with chosen stimuli intensities, in the auditory cortex, as compared to the visual and sensorimotor areas, there is a more pronounced interaction of two types of afferentation.