Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy

R. M. Yulmetyev, P. Hänggi, D. G. Yulmetyeva, S. Shimojo, E. V. Khusaenova, Katsumi Watanabe, J. Bhattacharya

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)443-454
Number of pages12
JournalPhysica A: Statistical Mechanics and its Applications
Volume383
Issue number2
DOIs
Publication statusPublished - 2007 Sep 15
Externally publishedYes

Fingerprint

epilepsy
Epilepsy
brain
Phase Space
Time series
Singularity
Nonequilibrium Dynamics
Quantifiers
Chaotic Behavior
Stratification
stratification
stimuli
Likely
Fluctuations
color
Brain
Human
Color

Keywords

  • Discrete non-Markov stochastic processes
  • Human brain
  • Magnetoencephalograms
  • Photosensitive epilepsy
  • Relaxation and phase space singularities

ASJC Scopus subject areas

  • Mathematical Physics
  • Statistical and Nonlinear Physics

Cite this

Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy. / Yulmetyev, R. M.; Hänggi, P.; Yulmetyeva, D. G.; Shimojo, S.; Khusaenova, E. V.; Watanabe, Katsumi; Bhattacharya, J.

In: Physica A: Statistical Mechanics and its Applications, Vol. 383, No. 2, 15.09.2007, p. 443-454.

Research output: Contribution to journalArticle

Yulmetyev, R. M. ; Hänggi, P. ; Yulmetyeva, D. G. ; Shimojo, S. ; Khusaenova, E. V. ; Watanabe, Katsumi ; Bhattacharya, J. / Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy. In: Physica A: Statistical Mechanics and its Applications. 2007 ; Vol. 383, No. 2. pp. 443-454.
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