SEASONAL CHARACTERISTICS OF PSYCHOPHYSIOLOGICAL PARAMETERS OF STUDENTS IN THE NORTH

The study of the mechanisms of adaptation of the organism to extreme environmental factors is one of the main issues of physiology, which does not lose its relevance. Specific photoperiodism, characteristic of different seasons of the year in the North, can affect not only the physiological, but also the psychoemotional state of the organism. In order to identify evolutionarily formed chronophysiological mechanisms of human adaptation to extreme conditions of the North, a longitudinal study was conducted in different seasons (autumn, winter, spring and summer) of the features of psychoemotional instability, anxiety (situational and personal anxiety), regulatory restructuring of the heart rhythm of the organism of young practically healthy males of indigenous nationality. The object of the longitudinal study were young Yakut men (MY), volunteers, students of the Medical Institute of the North-Eastern Federal University named after M.K. Ammosov (n = 26). The average age was 19.1±2.2 years. The high psycho-emotional stress of young Yakut men in winter revealed by the study is probably an adaptation mechanism that determines high functional activity and stability of the nervous system during the period of combined exposure to cold and polar night. Intrasystemic activation of the cardiovascular system of young Yakut men against the background of high overall power of vegetative regulation (3476.15 ms2) and normal value of the stress index (119.92 c.u.) in winter contributes to the mobilization of the adaptive mechanisms of the human body, which is reflected in the growth of the adaptive-restorative potential in extreme conditions and higher indicators of this potential in people with a high level of psycho-emotional stress.