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

Yulmetyev, Renat M.; Hänggi, Peter; Yulmetyeva, Dinara G.; Shimojo, Shinsuke; Khusaenova, E. V.; Watanabe, Katsumi and Bhattacharya, Joydeep. 2007. Relaxation and phase space singularities in time series of human magnetoencephalograms as indicator of photosensitive epilepsy. Physica A: Statistical Mechanics and its Applications, 383(2), pp. 443-454. ISSN 03784371 [Article]

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Abstract or Description

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.

Item Type:

Article

Identification Number (DOI):

https://doi.org/10.1016/j.physa.2007.04.046

Departments, Centres and Research Units:

Psychology

Dates:

DateEvent
2007Published

Item ID:

4955

Date Deposited:

21 Feb 2011 14:09

Last Modified:

30 Jun 2017 13:22

Peer Reviewed:

Yes, this version has been peer-reviewed.

URI:

http://research.gold.ac.uk/id/eprint/4955

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