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.
Additional Information
© 2007 Elsevier B.V. Received 26 February 2007; revised 26 March 2007. Available online 27 April 2007. 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.).Additional details
- Eprint ID
- 14015
- Resolver ID
- CaltechAUTHORS:20090419-184744066
- RFBR N 05-02-16639a
- Ministry of Education and Science of Russian Federation
- Japan Science and Technology Agency
- Created
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2009-04-21Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field