Increase reliability of bioelectric activity (EEG, ECG and HRV) deterministic chaos researches by the nonlinear analysis methods

O. Yu. Mayorov, V. N. Fenchenko


        The possible reasons of errors occurrence are analyzed at research deterministic chaos in bioelectric activity of of man and animals organism (EEG, ECG, HRV, etc.) by methods of the nonlinear analysis. The complex approach is offered, allowing to increase accuracy and reliability of received results at a correct choice of stationary sites of a signal, a delay and scale of consideration, use of adequate parameters during attractor reconstruction (an estimation of dimension of reconstruction and embedding dimension), for estimating entropy process and maximal Lyapunov exponent. Corresponding software NeuroResearcher is created and examples of chaos parameters calculations of typical EEG and ECG signals illustrated.
Keywords: sbioelectric activity of organism, EEG, ECG, HRV analysis, deterministic chaos, attractor reconstruction, attractor dimensions, delay, entropy, maximal Lyapunov exponent.