ZhETF, Vol. 131,
p. 729 (April 2007)
(English translation - JETP,
Vol. 104, No. 4,
available online at www.springer.com
STRONG MEMORY IN TIME SERIES OF HUMAN MAGNETOENCEPHALOGRAMS CAN IDENTIFY PHOTOSENSITIVE EPILEPSY
Yulmetyev R.M., Yulmetyeva D.G., Hanggi P., Shimojo S., Bhattacharya J.
Received: July 13, 2006
PACS: 05.45.Tp, 87.19.La, 89.75.-k
To discuss the salient role of statistical memory effects in the 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 the signals in the separate areas for a patient most likely identifies the regions where the protective mechanism against the occurrence of photosensitive epilepsy is located.