Research spectra of complex audio signals  and methods of music therapy

In this paper, an analysis of previous studies on the perception of music as a stimulating material. The analysis of the data presented in the scientific literature and own studies allowed us to make an assumption about the structure of musical influence. In the work, it was represented by the interaction of three subsystems, which are hierarchical levels of a holistic system, built on the dynamic principle, which most reflects the essence of musical influence on the person.

The study of the spectral characteristics of the bioelectric activity of the brain of students during the listening of complex audio signals, namely, musical compositions of various components and structures, and the criterion of reaching the audible frequency range, was studied. The method of the experiment is to carry out research on stimulation of the central nervous system of a person with complex audio signals, the musical fragments of different component-structural composition are involved. On the basis of spectral analysis, set characteristic frequencies with the highest amplitude to the entire spectrum, often for each of the compositions, and divide the compositions into three frequency groups: low frequency, medium frequency and high-frequency.

The research will be selected, on a voluntary basis, in accordance with the rules of bioethics, which are regulated by international documents, 30 volunteers - students. The study of the influence of complex audio signals on the electrical activity of the cerebral cortex will be carried out in a certified muffled room of the Acoustics and Acoustoelectronics Department of the Igor Sikorsky Kyiv Polytechnic Institute by the method of electroencephalography (EEG) using the computer electroencephalograph "BRAINTEST-16" The technique of experiment for the influence of selected musical compositions on the rhythms of the brain, in particular alpha, beta, delta and theta - rhythms is presented. In the case of a general positive effect, a detailed analysis of changes in the parameters of rhythms and localization of areas of musical compositions that most effectively affect the rhythms of the human brain, the method of treatment of disorders of the functioning of the central nervous system, organic brain damage, stress, and its effective psychological rehabilitation.