Experimental Study of Bioelectric Activity of the Brain of Students While Listening to a Musical Composition

In this paper describes the technique and experimental study of the spectral characteristics of the bioelectric activity of the brain of students while listening to musical compositions. Namely, the audio signals that were selected for spectral characteristics by the criterion of coverage of the audible frequency band. Using the statistical analysis, the results of the EEG processing of the experimental data are presented. The results obtained are reflected in brain activity maps by frequency and range for brain rhythms, including alpha, beta, and theta rhythms.

This paper describes the technique and experimental study of the spectral characteristics of the bioelectric activity of students' brains while listening to musical compositions. Music is an important model system for studying rhythmic communication because its rhythmic structure is well understood. In recent years, methods of computer processing of EEG data have become widely available. However, in clinical practice the traditional visual analysis of the obtained data dominates due to the lack of elaboration of norm and pathology criteria regarding the spectral characteristics of PEA. The bioelectric activity of the students' brain while listening to audio signals was studied, namely a music composition where a minute of silence was presented after each fragment. The audio signals were selected on the basis of spectral analysis after setting the characteristic frequencies with the highest amplitude to the entire spectrum, frequencies for each of the compositions, and divide the compositions into three groups of frequencies: low-frequency, mid-frequency and high-frequency. The method of experiment is to conduct studies of the stimulation of the central nervous system of the person by different audio signals.

For the study were selected on a public basis in accordance with the rules of bioethics, which are regulated by international documents, 9 volunteers – students. With the use of silver cup electrodes, located in 16 standard leads, the localization of which was determined in accordance with the international system "10-20". Separate ear electrodes were used as reference. EEG recording was performed in the bandwidth from 3 to 30 Hz. An analysis of changes in the rhythm parameters and localization of the melody sites that most effectively influence the activity of the human brain were carried out. Based on the results obtained, the theta rhythm projected its activity into the post-central cortical regions, the beta rhythm projected activity on symmetrical occipital leads and alpha rhythms in the anterior regions.