HUMAN IMPULSIVITY AND REFLECTION: ASIMMETRY AND EEG DIFFERENCES
This paper investigates EEG-correlates of two groups of subjects: impulsive and reflectioned findings showed that reflectioned subjects were characterized not only by the  predominance of alpha- rhythm power but also by its  percentage incidence  of  all the frequency bands. This fact demonstrates  an active role of alpha rhythm in inhibitory control of behavior of reflectioned subjects. The differences  between the groups in favor of the impulsive  subjects were revealed  only in the percentage incidence of delta rhythm and fast frequencies - beta-1, which, as is known, are the indicators of activation processes. The differences between  the groups in the gamma-band were absent. Therefore, we can assume that  motivation and activation components predominate  in impulsive subjects'  behavior, which does not probably ensure an sufficient  integration of various aspects of  in-coming information (weakly pronounced gamma rhythm),  and which underlies  the peculiarities of their temperament, namely, quick decision-making  without corresponding  analysis of its consequences.