| function EEG=check_ref(EEG,ref_chan,num_chans,num_exts) | |
| % Copyright (C) 2010 Hugh Nolan, Robert Whelan and Richard Reilly, Trinity College Dublin, | |
| % Ireland | |
| % nolanhu@tcd.ie, robert.whelan@tcd.ie | |
| % | |
| % This program is free software; you can redistribute it and/or modify | |
| % it under the terms of the GNU General Public License as published by | |
| % the Free Software Foundation; either version 2 of the License, or | |
| % (at your option) any later version. | |
| % | |
| % This program is distributed in the hope that it will be useful, | |
| % but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| % GNU General Public License for more details. | |
| % | |
| % You should have received a copy of the GNU General Public License | |
| % along with this program; if not, write to the Free Software | |
| % Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| if all(round10(EEG.data(ref_chan,:),10)==0) | |
| EEG=h_pop_reref(EEG,[],'keepref','on'); | |
| end | |
| mediffs=zeros(1,size(EEG.data,3));vars=mediffs; | |
| for v=1:size(EEG.data,3) | |
| mediffs(v)=median(diff(EEG.data(ref_chan,:,v),1,2),2); | |
| vars(v)=var(EEG.data(ref_chan,:,v),[],2); | |
| end | |
| bad_subjs=union(find(min_z(mediffs)),find(min_z(vars))); | |
| for v=1:length(bad_subjs) | |
| tempEEG=h_eeg_interp_spl(pop_rejepoch(EEG,setdiff(1:size(EEG.data,3),bad_subjs(v)),0),ref_chan,'spherical',num_chans+1:num_chans+num_exts); | |
| EEG.data(:,:,bad_subjs(v))=tempEEG.data; | |
| end |