Российская академия наук


FEEDBACK FROM THE SUBJECT’S EEG IN THE CONTROL OF MUSICAL-ACOUSTIC TREATMENTS



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FEEDBACK FROM THE SUBJECT’S EEG IN THE CONTROL OF MUSICAL-ACOUSTIC TREATMENTS

Fedotchev A.I.

Institute of Cell Biophysics, Russian Academy of Sciences (ICB RAS), Pushchino, Russia, fedotchev@mail.ru


Social upheavals, crisis situations and stressful factors of modern life induce in humans multiple functional abnormalities in the form of so-called "uncomfortable syndromes". Under chronic complex action they might violate the adaptation mechanisms, cause a failure of protective organism systems and induce a disease. In these cases, highly needed are non-drug informational technologies aimed at the timely return of human subject to the optimal functional state and his cognitive rehabilitation. The most advanced modern non-drug approaches to human functional state regulation, that is music therapy (MT) and electroencephalogram (EEG) biofeedback (BFB), are characterized by some difficulties that seriously limit their efficiency. What is for EEG-BFB, there are two such limitations. The first one consists of inability for some patients to realize consciously the feedback signals from biopotentials of own brain which are evolutionally not intended for voluntary control. The second one is related to utilization of traditional EEG rhythms which are really the composition of several dynamic narrow-band EEG oscillators having different functional properties. What is for MT, the main its problem is adequate choice of music for most effective influence on the brain. Recently we have developed the original conception of non-drug human functional state regulation that combines the advantages of described approaches, but is lacking of its limitations. This is achieved due to several unique innovations. First, the proposed conception assumes to use automatically real-time revealed, significant for given subject narrow-band EEG oscillators instead of a priori specified wide-band traditional EEG rhythms. Second, the proposed conception uses the current amplitude of revealed EEG oscillator for the feedback control of music treatments. Presentation of music in strict accordance with the relevant characteristics of the brain bioelectric activity of the individual provides its enhanced effectiveness. The results of experimental testing of the conception are presented, and some perspective directions of future investigations are delineated. The work is supported by Russian Humanities Foundation, grant RHF 12-06-00198.

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