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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Three-dimensional neuronal brain activity estimation using shrinking smooth weighted-minimum-norm focal underdetermined-system solver methods
Optical Engineering, Volume 49, No. 12, Article 123201, Year 2010
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Description
A new nonparametric method, based on the smooth weighted-minimum-norm (WMN) focal underdetermined-system solver (FOCUSS), for electrical cerebral activity localization using electroencephalography measurements is proposed. This method iteratively adjusts the spatial sources by reducing the size of the lead-field and the weighting matrix. Thus, an enhancement of source localization is obtained, as well as a reduction of the computational complexity. The performance of the proposed method, in terms of localization errors, robustness, and computation time, is compared with the WMN-FOCUSS and nonshrinking smooth WMN-FOCUSS methods as well as with standard generalized inverse methods (unweighted minimum norm, WMN, and FOCUSS). Simulation results for single-source localization confirm the effectiveness and robustness of the proposed method with respect to the reconstruction accuracy of a simulated single dipole. © 2010 Society of Photo-Optical Instrumentation Engineers.
Authors & Co-Authors
Zouch, Wassim
Tunisia, Sfax
Ecole Nationale D'ingénieurs de Sfax
France, Valenciennes
Université Polytechnique Hauts-de-france
Slima, Mohamed Ben
Tunisia, Sfax
Ecole Nationale D'ingénieurs de Sfax
Feki, Imed
Tunisia, Sfax
University of Sfax
Derambure, Philippe H.
France, Lille
Centre Hospitalier Régional de Lille
Taleb-Ahmed, Abdelmalik A.
France, Valenciennes
Université Polytechnique Hauts-de-france
Ben Hamida, Ahmed
Tunisia, Sfax
Ecole Nationale D'ingénieurs de Sfax
Statistics
Citations: 6
Authors: 6
Affiliations: 4
Identifiers
Doi:
10.1117/1.3505847
ISSN:
00913286
e-ISSN:
15602303