Title :
A Study of White Matter Anisotropic Conductivity on BEG Forward Solutions
Author :
Li, Jing ; Wang, Kun ; Zhu, Shanan ; Mueller, Bryon ; Lim, Kelvin ; Liu, Zhongming ; He, Bin
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
The purpose of the present study is to examine the effects of the White Matter (WM) anisotropy on the scalp electroencephalogram (EEG). The finite difference method (FDM) was used to model the head volume conductor with three kinds of inhomogeneous and anisotropic WM conductivities estimated by the volume constraint method. A current dipole was used to simulate the brain electrical activity with varying locations and orientations within the Gray-Matter (GM) of the cortex. The present computer simulation results suggest that the anisotropic conductivity of WM may have some effects on the scalp EEG. Further investigations are needed to fully address this issue.
Keywords :
bioelectric phenomena; electroencephalography; finite difference methods; EEG; EEG forward solutions; FDM; brain electrical activity; cortex; current dipole; finite difference method; gray matter; head volume conductor; scalp electroencephalogram; volume constraint method; white matter anisotropic conductivity; Anisotropic magnetoresistance; Brain modeling; Conductivity; Conductors; Eigenvalues and eigenfunctions; Electroencephalography; Finite difference methods; Head; Scalp; Tensile stress;
Conference_Titel :
Noninvasive Functional Source Imaging of the Brain and Heart and the International Conference on Functional Biomedical Imaging, 2007. NFSI-ICFBI 2007. Joint Meeting of the 6th International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-0949-5
Electronic_ISBN :
978-1-4244-0949-5
DOI :
10.1109/NFSI-ICFBI.2007.4387706
