Quantitative analysis by renormalized entropy of invasive electroencephalograph recordings in focal epilepsy
- 1 October 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 58 (4) , 4859-4864
- https://doi.org/10.1103/physreve.58.4859
Abstract
Invasive electroencephalograph (EEG) recordings of ten patients suffering from focal epilepsy were analyzed using the method of renormalized entropy. Introduced as a complexity measure for the different regimes of a dynamical system, the feature was tested here for its spatiotemporal behavior in epileptic seizures. In all patients a decrease of renormalized entropy within the ictal phase of seizure was found. Furthermore, the strength of this decrease is monotonically related to the distance of the recording location to the focus. The results suggest that the method of renormalized entropy is a useful procedure for clinical applications like seizure detection and localization of epileptic foci.Keywords
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