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Detection of spectral instability in EEG recordings during the preictal period.

Abstract : The study of EEG recordings during the interval prior to an epileptic seizure onset--the preictal period--is likely to detect changes in the ongoing brain activity consistent with seizure anticipation. A novel index of spectral instability (ISpI) based on multiple abrupt changes of EEG spectral features is presented here. Based on the analysis of control records, robust M-estimates are used to calculate the threshold and avoid false warnings. The results obtained with a small data set (three patients, ten preictal records per patient) have shown that the ISpI index provided a warning flag that anticipated the seizure onset by 13.1 (SD = 4.0) min on average.
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https://www.hal.inserm.fr/inserm-00382267
Contributor : Jean-Paul Issartel <>
Submitted on : Thursday, May 7, 2009 - 4:21:16 PM
Last modification on : Friday, November 6, 2020 - 3:48:24 AM

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Tatyana Aksenova, Vladimir Volkovych, Alessandro Villa. Detection of spectral instability in EEG recordings during the preictal period.. Journal of Neural Engineering, IOP Publishing, 2007, 4 (3), pp.173-8. ⟨10.1088/1741-2560/4/3/001⟩. ⟨inserm-00382267⟩

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