title: Combining WMN and FOCUSS recursive approach to estimating the current density distribution in the brain.
abstract: In this paper we present a new approach which combines the two methods of cerebral electric activity's localization: "Weighted Minimum Norm" (WMN) and the iterative method "FOCal Underdetermined System Solver" (FOCUSS). Our idea is to use the current density distribution estimated by the WMN method in order to initialize the weighting matrix necessary for the localization with FOCUSS method. We compare the found results with those of the traditional WMN and FOCUSS methods in term of computing time and resolution matrix. The presented results show that our approach gives a good localization of the active sources in the brain.
authors.affiliation: Unité de Recherche en Traitement de l'Information et en Electronique Médicale 'TIEM' ENIS Université de Sfax, Tunisia.
authors.forename: W
authors.initials: W
authors.lastname: Zouch
authors.forename: R
authors.initials: R
authors.lastname: Khemakhem
authors.forename: J
authors.initials: J
authors.lastname: Boughariou
authors.forename: A
authors.initials: A
authors.lastname: Taleb-Ahmed
authors.forename: I
authors.initials: I
authors.lastname: Feki
authors.forename: A
authors.initials: A
authors.lastname: Hamida
authors.forename: P
authors.initials: P
authors.lastname: Derambure
mesh_terms: D000818:Animals; D001931:Brain Mapping; D054022:Cerebrum / Q000502:physiology*; D006801:Humans; D008954:Models, Biological