Zabrodina L. Neurophysiological mechanisms of influence of electromagnetic fields of ultralow frequency on the functional state of the human brain

The object of study: human brain functional state. Purpose: studying of influence mechanisms of electromagnetic fields of ultralow frequency of natural and artificial origin on human brain functional state and increase of its stability to long-term electromagnetic influence in conditions of Antarctica. Methods: electroencephalography, psychophysiological methods: inquirer HAM (health, activity, mood) and Spielberg-Hanin anxiety scale, brain biopotentials spectral analysis, statistical methods. Theoretical and practical results, novelty: it was found that electromagnetic fields of ultralow frequency of natural and artificial origin cause changes in non-specific brain systems activity with emotional limbic-neocortical brain systems activity enhancement. For the first time the leading role of right hemisphere in functional integration of brain reactions in response to electromagnetic fields of natural and artificial origin influence. It has been shown that long-term stay in increased electromagnetic influence in Antarctica causes winterers decrease of functional brain state level with prolonged activation of its somnohenian mechanisms. It was found that preliminary sessions of magnetic stimulation for winterers lead to activation of cerebral mechanisms of adaptation providing to conditions of Antarctica, increase of workability level and emotional tone. Field of application: using of magnetic stimulation sessions for preparing members of Antarctic expeditions.