title: [A psychophysiological approach toward the problem of consciousness].
abstract: Psychophysiological analysis of the relationship between the level of consciousness and the brain activation permitted an identification of three levels of consciousness at the transition from wakefulness to sleep. A change in the intensity and quality of involuntarily mental processes served as an index of the level of consciousness according to subjects' self-reports. It was found that a certain EEG profile corresponds to each level of consciousness under study. Data obtained showed that the lowest level of activation corresponds to a state in which a subject notes an inhibition of "internal speech", "failure of thoughts". At this case the dynamics of the EEG high frequency rhythm changes which is possibly related to the mechanism of transmission of cognitive information.
authors.forename: V M
authors.initials: VM
authors.lastname: Rusalov
authors.forename: M N
authors.initials: MN
authors.lastname: Rusalova
authors.forename: A A
authors.initials: AA
authors.lastname: Mitrofanov
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000502:physiology*; D003243:Consciousness / Q000502:physiology*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male