[Role of the frontal cortex in organizing emotional-behavioral reactions induced by hypothalamic stimulation and natural stimuli].

Study of the effects of a functional switching off the sensorimotor neocortex area in cats by means of cooling reveals its inhibitory influence on emotional-behavioral reactions to hypothalamic stimulation. Multiple (up to 12) switchings off of the frontal neocortex are attended with a gradual compensation of its inhibitory function by the activity of other brain structures. On the other hand inactivation of the sensorimotor cortex reduces the ability of natural provoking stimuli to lower the thresholds of goal-directed rage which develops when these stimuli are combined with an electrical stimulation of the hypothalamus. A conclusion has been made on the participation of the frontal neocortex in the systemic organization of estimation of biologically significant stimuli.