6533b83afe1ef96bd12a7f28

RESEARCH PRODUCT

An Improved Solver for the M/EEG Forward Problem

Guido AlaElisa FrancomanoSalvatore GanciG. E FasshauerM. J. Mccourt

subject

Settore ING-IND/31 - ElettrotecnicaSettore MAT/08 - Analisi NumericaEEG MEG method of fundamental solutions meshfree methods

description

Noninvasive investigation of the brain activity via electroencephalography (EEG) and magnetoencephalography (MEG) involves a typical inverse problem whose solution process requires an accurate and fast forward solver. We propose the Method of Fundamental Solutions (MFS) as a truly meshfree alternative to the Boundary Element Method (BEM) for solving the M/EEG forward problem. The solution of the forward problem is obtained, via the Method of Particular Solutions (MPS), by numerically solving a set of coupled boundary value problems for the 3D Laplace equation. Numerical accuracy and computational load are investigated for spherical geometries and comparisons with a state-of-the-art BEM solver shows that the proposed method is competitive.

yearjournalcountryeditionlanguage
2014-01-01
http://hdl.handle.net/10447/98293