Computations of electroencephalography and magnetoencephalography for real head model

Author

Rao, Liyun ; He, Renjie ; Li, Ying ; Liu, Shuo ; Yan, Weili

Author_Institution

Hebei Univ. of Technol., Tianjin, China

Volume

36

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1812

Lastpage

1816

Abstract

Methods for constructing a real head model from MRI (magnetic resonance imaging) data and its boundary element mesh are proposed. Based on this real head model, forward computations of electroencephalography and magnetoencephalography are investigated and numerical simulation results are presented. Deflation is adopted in order to solve the singularity of discrete system equations in the boundary element method. An isolated problem approach is applied to overcome the smear effect of skull conductivity. An improved auto solid angle algorithm is developed to speed up the computation of kernel matrix

Keywords

biomedical MRI; boundary-elements methods; electroencephalography; magnetoencephalography; physiological models; MRI; auto solid angle algorithm; boundary element mesh; boundary element method; deflation; discrete system equations; electroencephalography; kernel matrix; magnetic resonance imaging; magnetoencephalography; real head model; skull conductivity; smear effect; Boundary element methods; Brain modeling; Computational modeling; Electroencephalography; Equations; Magnetic heads; Magnetic resonance imaging; Magnetoencephalography; Numerical simulation; Skull;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.877797

Filename

877797