vb_set_basis_parm

 Set parameters for leadfield calculation
 basis_parm = vb_set_basis_parm

 2006/09/20 ver 0.5 by M. Sato


 Copyright (C) 2011, ATR All Rights Reserved.
 License : New BSD License(see VBMEG_LICENSE.txt)

0001 function basis_parm = vb_set_basis_parm
0002 % Set parameters for leadfield calculation
0003 % basis_parm = vb_set_basis_parm
0004 %
0005 % 2006/09/20 ver 0.5 by M. Sato
0006 %
0007 %
0008 % Copyright (C) 2011, ATR All Rights Reserved.
0009 % License : New BSD License(see VBMEG_LICENSE.txt)
0010 
0011 %
0012 % --- Standard parameters(relative path from proj_root)
0013 %
0014 
0015 basis_parm.brain_file = 'Subject.brain.mat';
0016 basis_parm.meg_file   = '';
0017 basis_parm.head_file  = '.head.mat';
0018 
0019 % MEG/EEG device name
0020 basis_parm.device     = [];
0021 
0022 %
0023 % Output file(relative path from proj_root)
0024 %
0025 
0026 basis_parm.basis_file = 'leadfield.basis.mat';
0027 
0028 global vbmeg_inst;
0029 const = vbmeg_inst.const;
0030 
0031 % BEM mode definition
0032 % const.BASIS_MEG_SPHERE    = 0; %  MEG Sphere model (Sarvas)
0033 % const.BASIS_MEG_BEM        = 1; %  MEG 1-shell BEM
0034 % const.BASIS_MEG_HARMONICS = 2; %  MEG Spherical harmonics expansion
0035 % const.BASIS_EEG_SPHERE    = 3; %  EEG 3-shell Sphere model
0036 % const.BASIS_EEG_BEM        = 4; %  EEG 3-shell BEM
0037 
0038 basis_parm.bem_mode   = const.BASIS_MEG_SPHERE;
0039 
0040 % Current degree of freedom (Basis_mode)
0041 % const.CURRENT_NORMAL  = 1;  %  normal to cortex
0042 % const.CURRENT_TANGENT = 2;  %  tangent vectors
0043 % const.CURRENT_3D        = 3;  %  x, y, z -direction
0044 
0045 basis_parm.Basis_mode = const.CURRENT_NORMAL;
0046 
0047 % Average mode for normal direction
0048 % const.NORMAL_ADJACENT_MEAN  = 0;  % 隣接点の法線平均
0049 % const.NORMAL_NEIGHBOR_MEAN  = 1;  % BV脳モデル近傍点の法線平均
0050 
0051 basis_parm.normal_mode = const.NORMAL_ADJACENT_MEAN;
0052 
0053 %
0054 % --- Advanced parameters
0055 %  Do not change, unless you understand the meaning of the parameters!!
0056 %
0057 
0058 basis_parm.area_file  = ''; % Optional
0059 basis_parm.area_key   = [];
0060 
0061 % coordinate value of the head center.(1x3 on SPM_Right_m)
0062 basis_parm.Vcenter = [];
0063 
0064 % Order of spherical harmonics function
0065 basis_parm.func_order = 35;
0066 % Conductivity from innermost to outermost
0067 basis_parm.sigma  = [ 0.62  0.03  0.62 ];
0068 % Relative radius of sphere from innermost to outermost
0069 basis_parm.radius = [ 0.87  0.92   1.0 ];
0070 
0071 basis_parm.Recalc = OFF;