Discerning nonstationarity from nonlinearity in seizure-free and preseizure EEG recordings from epilepsy patients |
| |
Authors: | Rieke Christoph Mormann Florian Andrzejak Ralph G Kreuz Thomas David Peter Elger Christian E Lehnertz Klaus |
| |
Affiliation: | Department of Epileptology, University of Bonn, Sigmund Freud Str.25, 53105 Bonn, Germany. rieke@iskp.uni-bonn.de |
| |
Abstract: | A number of recent studies indicate that nonlinear electroencephalogram (EEG) analyses allow to define a state predictive of an impending epileptic seizure. In this paper, we combine a method for detecting nonlinear determinism with a novel test for stationarity to characterize EEG recordings from both the seizure-free interval and the preseizure phase. We discuss differences between these periods, particularly an increased occurrence of stationary, nonlinear segments prior to seizures. These differences seem most prominent for recording sites within the seizure-generating area and for EEG segments less than one minute's length. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|