THE DYNAMICS OF THE DOMINANT ALPHA-RHYTHM FREQUENCY IN PERCEPTION ANDREPRODUCTION OF TIME INTERVALS

Dependence of the dominant alpha frequency on the processes of percept ion and subsequent reproduction of time intervals by rhythmic hand pre ssing was analysed. Two groups of subjects were separated, which demos trated either an increase (I) or a decrease (II) in the dominant alpha frequency after the transition from perception to reproduction. In th e I group 83% of the subjects reproduced time intervals with a delay. In the II group reproduction in advance was observed in 75% of the sub jects. The dynamics of the dominant alpha frequency probably reflects formation of-the optimal functional state underlying the individual le vel of activation and properties of the higher nervous activity in the subjects from both groups.