[show abstract][hide abstract] ABSTRACT: To discuss the salient role of statistical memory effects in human brain functioning, we have analyzed a set of stochastic
memory quantifiers that reflects the dynamical characteristics of neuromagnetic responses of magnetoencephalographic signals
to a flickering stimulus of different color combinations from a group of control subjects, and compared them with those for
a patient with photosensitive epilepsy. We have discovered that the emergence of strong memory and the accompanying transition
to a regular and robust regime of chaotic behavior of signals in separate areas for a patient most likely identifies the regions
where the protective mechanism against the occurrence of photosensitive epilepsy is located.
Journal of Experimental and Theoretical Physics 03/2007; 104(4):644-650. · 0.92 Impact Factor
[show abstract][hide abstract] 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.
Physica A: Statistical Mechanics and its Applications 11/2006; · 1.68 Impact Factor