[Modulated electromagnetic field as a factor of selective influence on animal mechanisms of goal-directed behavior]

Proceeding from P.K. Anokhin's theory of the functional systems, the paper considers the action of a modulated electromagnetic field (MEMF) on different stages of the central architectonics of purposeful behaviour of rats: afferent synthesis, decisions making, acceptor of the action results. The action of MEMF was studied in different experimental situations: choice of an alimentary or defensive reaction to one conditioned stimulus in different situations; extinction of conditioned alimentary reactions; elaboration and extinction of alimentary conditioned reactions in animals group contacts; choice of the side of reinforcement in a T-shaped maze, and, lastly, self-stimulation reactions. The experiments have shown that MEMF has a selective effect on the animals' emotional reactions. Greater disturbances are observed in the mechanisms of the animals' appraisal of the action of situational and trigger stimuli or surrounding individuals of their species and, hence, of decisions making and anticipation of future results of the action, the acceptor of the action results.