ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


coupling

Human brain state monitoring in perceptual decision-making tasks

The purpose of this review is to observe the current state of research on sensorimotor integration in the human brain during visual perception and subsequent decision-making under conditions of ambiguous information. Methods. This review examines the approaches of time-frequency wavelet analysis for brain activity when performing perceptual tasks, as well as the possibility of using such methods in the tasks of constructing brain – computer interfaces. Results.

Mathematical model and dynamical analysis of the human equilibrium seeking training

The purpose of this work is to determine the ability of the partial directed coherence method to identify the
directed interaction between nonlinear systems correctly in presence of nonlinear couplings between systems, as well as
in the case when the measured signals are generated by objects of high dimension. The another purpose is to determine
the dependence of the coupling estimation results on the parameters: series length, sampling rate, model dimension and the

Waves of strain in two coaxial cubically nonlinear cylindrical shells with a viscous fluid between them

Subject of the study. Longitudinal deformation waves are investigated in physically nonlinear coaxial elastic shells with a viscous incompressible fluid between its. There are taken into account effect on the amplitude and speed of inertia wave of the fluid and the environment, and as well as the damping properties of the structural materials, from which the waveguides are made.

Detecting the primary time scale of evolution of information properties for local field potentials in brain at absence epilepsy

The purpose of the current study is to determine how the characteristic time (lag) responsible for keeping information about the previous dynamics in the brain local field potential signals evaluates in time. This time is necessary to know in order to construct forecasting models for coupling estimation and seizure prediction and detection. Methods. Mutual information function calculated between a signal with itself shifted in time is used. The shift varies from 0 to one half of characteristic oscillation period.

Effect of nonlinearity on coupling estimations between oscillators using partial directed coherence approach

The purpose of this work is to determine the ability of the partial directed coherence method to identify directed interactions between nonlinear systems correctly in presence of nonlinear couplings between systems, as well as in the
case of measured signals generated by objects of high dimension. The other purpose is to determine the dependence of the coupling estimation results on the parameters: series length, sampling rate, model dimension and coupling architecture.