Application of Multifractal Formalism in Study of the Role of Autonomic Regulation in Formation of Intrinsic Electromagnetic Radiation of the Brain

Abstract

The article discusses capabilities of a modified MRTRS-40 radiophysical complex for co_processing of heart rate variability (HRV) signals and intrinsic electromagnetic radiation of the brain. It is shown that the use of multifractal analysis for aggregate functional studies of HRV and intrinsic electromagnetic radiation of the brain enables estimation of the similarity of the following processes:

− activity of the sympathetic division of the autonomic nervous system with periods of fluctuations in the range 6.5-25 s and fluid transport dynamics in the intercellular and intracellular spaces of brain tissues with periods of fluctuations ranging from 20 to 40 s;

− activity of central ergotropic and humoral-metabolic mechanisms of heart rate regulation, defined as very low frequency oscillations of HRV in the range from 25 to 300 s, and processes of thermodynamic regulation in the brain tissues with periods of fluctuations in the range 50–70 s.

If a systematic discrepancy of these estimates cannot be considered insignificant, then a situation is characterized in which the role of autonomic regulation is reduced in brain functional processes.