vb_load_original_brain_info

 load original brain vertex index correspond to the reduced brain model
  original_info = vb_load_original_brain_info(brainfile)
 --- Output
 original_info.brain_file  = original brain file
 original_info.parent_ix   = original vertex index 
                             corresponding to the current cortical vertices
 original_info.neighbor_ix = neighbor index in the original brain model 
                             for the current cortical vertices
 if the brainfile is original brain made from BV, [] is returned

 M. Sato  2006-7-23

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

0001 function    original_info = vb_load_original_brain_info(brainfile)
0002 % load original brain vertex index correspond to the reduced brain model
0003 %  original_info = vb_load_original_brain_info(brainfile)
0004 % --- Output
0005 % original_info.brain_file  = original brain file
0006 % original_info.parent_ix   = original vertex index
0007 %                             corresponding to the current cortical vertices
0008 % original_info.neighbor_ix = neighbor index in the original brain model
0009 %                             for the current cortical vertices
0010 % if the brainfile is original brain made from BV, [] is returned
0011 %
0012 % M. Sato  2006-7-23
0013 %
0014 % Copyright (C) 2011, ATR All Rights Reserved.
0015 % License : New BSD License(see VBMEG_LICENSE.txt)
0016 
0017 load(brainfile, 'Vinfo')
0018 
0019 if isfield(Vinfo,'NdipoleL0')
0020     original_info.brain_file = [];
0021     original_info.parent_ix  = [];
0022 else
0023     load(brainfile, 'original_info')
0024 end
0025