Information Analysis of Radio Brightness Temperature Fluctuations in Brain Tissues

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

“…Gulyaev and Godik [3] formulated the hypothesis of parametric modulation of the intrinsic physical fields of a person by biochemical and biophysical processes of the body. The hypothesis was confirmed by results of experi mental studies [4,5] obtained using methods of statistical and information analysis. In order to improve the quality of identification of these processes, appropriate mathematical methods of state diagnosis can be used, including the methodology of diagnostics of states described by dynamic series of characteristics [6].…”

“…We have previously shown that the fluctuations of IER of the human brain in the frequency band from 650 to 850 MHz can be interpreted as changes in certain physical processes: in the frequency range from 0.15 to 0.025 Hz, these fluctuations mainly reflect the dynamics of fluid transport in intercellular and intracellular spaces of brain tissues, and at frequencies less than 0.025 Hz, thermodynamic changes in them [2,4,5]. The following boundary time scales of multifractal analysis were select ed for the signal of IER: δ(ε), 20 40 s, and T d , 50 70 s.…”

The interface between the brain microwave radiation and autonomic nervous system

“…This spectrum mainly reflects changes of the dielectric permeability in tissues in depth more than 10 mm and is a consequence of the humoral processes. In the band of frequencies below 0.013 Hz, intensity of fluctuations of the brain microwave radiation is defined by thermodynamic changes in its tissues that are stimulated by metabolic processes [17]. Based on the mentioned frequencies, the following time scale boundaries are chosen for investigation of multifractal properties of the microwave radiation: δ[] -(20, 40) s and Ttd -(50, 70) s.…”