THE ROLE OF THE CENTRAL NUCLEUS OF THE AMYGDALA COMPLEX IN THE REGULATION OF SYSTEMIC HEMODYNAMICS OF RATS UNDER STRESS

The amygdala complex has a significant impact on many parameters of the activity of the cardiovascular system: blood pressure, heart rate, vascular tone, and others. Since the amygdala is one of the links of the extrahypothalamic system of corticoliberin, the structure affects stress-dependent behavior in animals, plays an important role in initiating an emotionally motivated response. The study of the role of the central divisions of the amygdala complex in the regulation of the activity of the cardiovascular system was carried out on intact and subjected to electrolytic destruction of the central nucleus of the amygdala. Based on the data obtained in the study, it was revealed that when hydrocortisone is administered, the pressure parameters change, and the values of the heart rate change slightly throughout the experiment, it can be assumed that the central nucleus of the amygdala increases the tone of the sympathetic part of the autonomic nervous system, thereby increasing its effect on the tone of blood vessels. In our opinion, this influence of the amygdala is realized primarily through the hypothalamic pathway, and not by means of connections with the medulla oblongata.