[Changes in the narrow-band components of the EEG spectrum under the action of nootropic drugs].

Patients with asthenic disorders were examined for EEG reactions to the administration of some nootropics. The significance of the narrow bands of the post-drug EEG spectrum was revealed. According to these data, the detailed EEG profiles of the nootropics under study were obtained. Analysis of these EEG profiles discovered the common and specific characteristics of different nootropics.