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Updated: Jul 10, 2026
Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging
Published on: June 30, 2018
Combining WMN and FOCUSS recursive approach to estimating the current density distribution in the brain
W Zouch1, R Khemakhem, J Boughariou
1Unité de Recherche en Traitement de l'Information et en Electronique Médicale 'TIEM' ENIS Université de Sfax, Tunisia.
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.
