Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy
arXiv:physics/0611297 · doi:10.1016/j.physa.2007.04.046
Abstract
To analyze the crucial role of fluctuation and relaxation effects for the function of the human brain we studied some statistical quantifiers that support the information characteristics of neuromagnetic brain responses (magnetoencephalogram, MEG). The signals to a flickering stimulus of different color combinations have been obtained from a group of control subjects which is then contrasted with those of a patient suffering photosensitive epilepsy (PSE). We found that the existence of the specific stratification of the phase clouds and the concomitant relaxation singularities of the corresponding nonequilibrium dynamics of the chaotic behavior of the signals in separate areas in a patient provide likely indicators for the zones which are responsible for the appearance of PSE.
15 pages, 10 figures, Physica A, accepted
References in corpus (7)
- Effect of nonstationarities on detrended fluctuation analysis
- A simple measure of memory for dynamical processes described by the generalized Langevin equation
- Nonlinear parametric model for Granger causality of time series
- Stochastic Dynamics of Time Correlations in Complex Systems with Discrete Time
- Possibility between earthquake and explosion seismogram differentiation by discrete stochastic non-Markov processes and local Hurst exponent analysis
- The projection of a nonlocal mechanical system onto the irreversible generalized Langevin equation, II: Numerical simulations
- Improving the Global Fitting Method on Non-Linear Time Series Analysis