Psychophysiological effects of heliogeophysical agent S.V. Pryanichnikov, N.K. Belisheva, A.A. Martynova, V.V. Pozharskaya Kola Science Centre RAS, Apatity, Russia The study of the influence of heliogeophysical agents on the human body took on a mass character. However, "individual characteristics, the nature and expression of the heliomagnetic reactions and their role in the psychosomatic state, in the dynamics of adaptation...as well as the neurophysiological mechanisms of individual adaptation to high latitudes ... still not well understood" , (Soroko, 1985; Shepovalnikov, Soroko, 1992). Despite on the fact that the geomagnetic field (GMF) disturbances is considered as a hazard factor (Breus et al., 2002), It was be shown that the prevalence of the paradoxical reactions, confusion (Belisheva et.al., 1995), as well as the psychopathic reactions (Belisheva, Kachanova, 2002) increases in the lack of geomagnetic activity (GMA). In order to understand the mechanisms by which heliogeophysical agents affect on an individual level, and thus to predict the consequences of these impacts for a particular person, the prolonged multidimensional study need to conduct. The analysis of the link between the psychophysiological dynamics and the variations of the cosmophysical environment characteristics should be included in such study. The aim of this study was to reveal the link between the psycho-physiological dynamics of the individual body state and variations of the heliogeophysical agents. The study was performed on male volunteers (12 men, mean age 25 years), for 25 days (09.24.2012 – 10.18.2012). In the course of the daily research of the psychophysiological parameters of the examinees, the indices of situational and personal anxiety (SA and PA, respectively) were estimated by the Spielberger-Hanin method; the self-sensation of self health (S), Activity (Act) and Mood (M) (SAM method) were also calculated. In addition, magnitudes of the rate of adaptation (A), of the psycho-emotional state (PS), of the integral health index (IH), of the mean cardiac interval (RR), of the regulatory system stress index (IS), of the high-frequency (HF), low frequency (LF), of the ratio of the frequency bands (LF / HF) and the total frequency range (Total) in the heart rhythm were estimated by using of the "OMEGA-M" analyzer. To find the correlation between the psychophysiological parameter dynamics and the indices of the heliogeophysical agents, the data of the local GMA (http://www.sgo.fi/), of the neutron count rate (Apatity, PGI KSC RAS), the solar activity, of atmospheric pressure and temperature were used. The results shown that the magnitude of the cardiac interval (RR) is a main indicator of the body functional state, which determines the psychophysiological state. In particular, it was found that magnitudes of the A, IH, HF increase with increase of duration of the R-R interval. However, increase of R-R interval is accompanied by increase of the anxiety, (SA and PA) and by the decrease of the health level (S) and the activity (Act). Can be assume, that the magnitude of the RR interval has threshold at which the signs of correlations with some physiological parameters could be reversed. The negative correlations with GMA (Ak-average index for day of GMA) and the positive correlations with the Wolf numbers were also found for the RR interval (r = -0.42 and r = 0.45, respectively, p <0.05). The need to study the individual reactions on the GMA was confirmed by the detail analysis of the correlations between anxiety and GMF variations for every person. It turned out that 16.7% persons had no significant correlations between the anxiety and GMA; 41.6% persons had negative correlations (p <0.05) between the situational anxiety (SA) and GMA, that is when the GMA increases, the SA decreases. The personal anxiety (PA) of 25% persons also decreases with increasing of GMA. And the anxiety of 16.7% persons increases with increasing of GMA. Thus, the prediction of personal psycho-physiological reactions to the act of the heliogeophysical agents requires a detailed study of individual neurophysiological mechanisms which mediates the impact of environment on the body..