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1 – 1 of 1Yujie Zhang, Zhuoxiang Ren and David Lautru
The resolution of electroencephalography (EEG) forward problem by the finite element method (FEM) involves the modeling of current dipoles with the singularities. The purpose of…
Abstract
Purpose
The resolution of electroencephalography (EEG) forward problem by the finite element method (FEM) involves the modeling of current dipoles with the singularities. The purpose of the paper is to investigate the accuracy issue of the two alternative methods, the direct method and the subtraction method for the modeling of current dipoles.
Design/methodology/approach
Finite element modeling of current dipoles using the direct method and the alternative implementations of the subtraction method.
Findings
The accuracy and the performance of different methods are compared through a four-layer spherical head model with available analytical solution. Results show that the subtraction method involving only the surface integrals provides the best accuracy.
Originality/value
The subtraction method removes the difficulty of modeling the singularity of current dipoles but the accuracy depends on the implementation.
Details