Title :
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
fDate :
7/1/2000 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
