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; K. Watanabe; J. Bhattacharya

doi:10.1016/j.physa.2007.04.046

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, K. Watanabe, J. Bhattacharya

^*Corresponding author for this work

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Research output: Contribution to journal › Journal article › peer-review

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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 language	English
Pages (from-to)	443-454
Number of pages	12
Journal	Physica A: Statistical Mechanics and its Applications
Volume	383
Issue number	2
Early online date	27 Apr 2007
DOIs	https://doi.org/10.1016/j.physa.2007.04.046
Publication status	Published - 15 Sept 2007

User-Defined Keywords

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

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10.1016/j.physa.2007.04.046

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title = "Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy",

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.",

keywords = "Discrete non-Markov stochastic processes, Human brain, Magnetoencephalograms, Photosensitive epilepsy, Relaxation and phase space singularities",

author = "Yulmetyev, {R. M.} and P. H{\"a}nggi and Yulmetyeva, {D. G.} and S. Shimojo and Khusaenova, {E. V.} and K. Watanabe and J. Bhattacharya",

note = "This work was supported by the Grants of RFBR N 05-02-16639a, Ministry of Education and Science of Russian Federation N 2.1.1.741 (R.Y., D.Y., and E.K.) and JST. Shimojo ERATO project (J.B., K.W., and S.S.). Publisher Copyright: {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

year = "2007",

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doi = "10.1016/j.physa.2007.04.046",

language = "English",

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T1 - Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy

AU - Yulmetyev, R. M.

AU - Hänggi, P.

AU - Yulmetyeva, D. G.

AU - Shimojo, S.

AU - Khusaenova, E. V.

AU - Watanabe, K.

AU - Bhattacharya, J.

N1 - This work was supported by the Grants of RFBR N 05-02-16639a, Ministry of Education and Science of Russian Federation N 2.1.1.741 (R.Y., D.Y., and E.K.) and JST. Shimojo ERATO project (J.B., K.W., and S.S.). Publisher Copyright: © 2007 Elsevier B.V. All rights reserved.

PY - 2007/9/15

Y1 - 2007/9/15

N2 - 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.

AB - 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.

KW - Discrete non-Markov stochastic processes

KW - Human brain

KW - Magnetoencephalograms

KW - Photosensitive epilepsy

KW - Relaxation and phase space singularities

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DO - 10.1016/j.physa.2007.04.046

M3 - Journal article

AN - SCOPUS:34447294035

SN - 0378-4371

VL - 383

SP - 443

EP - 454

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

IS - 2

ER -

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

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