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* Corresponding author 1 LTSI - Laboratoire Traitement du Signal et de l-Image

Abstract : This paper is aimed at understanding epileptic patient disorders through the analysis of surface electroencephalograms EEG. It deals with the detection of spikes or spike-waves based on a nonorthogonal wavelet transform. A multilevel structure is described that locates the temporal segments where abnormal events occur. These events are then visually interpreted by means of a 3D mapping technique. This 3D display makes use of a ray tracing scheme and combines both the functional the EEG but also its wavelet representation and the morphological data acquired from computed tomography CT or magnetic resonance imaging MRI devices. The results show that a significant reduction of the clinical workload is obtained while the most important episodes are better reviewed and analyzed.

Keywords : Spike Detection Transient Detection Wavelets Decision Hypothesis Testing False Alarm Statistical Signal Processing EEG

Autor: Lotfi Senhadji - Jean-Louis Dillenseger - Fabrice Wendling - Cristina Rocha - Abel Kinie -

Fuente: https://hal.archives-ouvertes.fr/


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