In this study, through an integrated psycho-physiological approach, it is shown that the complex dynamics of the power spectrum of the EEG reflects subjective differences in emotional reactions to stimuli. In the perception of emotionally positive slides found increased relative EEG power in the range of 6-8 Hz in frontal derivations, as well as the suppression of the activity of 8-12 Hz in the occipital and parietal leads. Resulting data can become the basis for the creation of a fundamentally new method of objective diagnostics of emotional responses, which will be in demand both in medicine and applied fields of psychophysiology and in fundamental studies of emotional reactions.