[Neurophysiologic analysis of visceral afferent systems].

Interaction of visceral and somatic afferents and changes of neuronal discharges in focus of maximal activity of cerebral cortex on repetitive stimulation of visceral afferents were studied in anesthetized immobilized cats. Habituation was shown to develop in the cortex. Visceral and somatic impulses appeared to converge on cortical neurons in the S1. Simultaneous stimulation of the visceral and somatic afferents revealed domination of visceral influences. The elements of cortex seem to have unequal plasticity which can provide premises for learning process.