Recherche de reproductibilité dans les relations inter- structures durant les crises d'épilepsie

The general context of this paper is the study of stereoelectroencephalographic signals (depth EEG) recorded during epilepti c seizures. A matching method is proposed aimed at quantifying (from seizure to seizure) the reproducibility of relations between channels estimated with the coherence function. The work is illustrated on simulated signals built from scenarios that describe a subtyp e of temporal lobe epilepsy. Issues of this work are linked to i) the automatic extraction of similarities in the evolution of relationships that take place between cerebral structures during seizures and ii) the pointing out of recurrent scenarios in the organization of these seizur es. - Key words : matching, coherence, reproducibility, EEG, epilepsy.