Reference Channel for DICS!
Muthuraman Muthuraman
muthuraman10 at HOTMAIL.COM
Wed Mar 7 17:14:56 CET 2007
Hello,
These are the configuration steps of the data for DICS
hdr = read_fcdc_header('pd_mof_tr0_c_0306.cnt');
emgindx = strmatch('M', hdr.label);
rstindx = setdiff(1:length(hdr.label),emgindx);
hdr
Fs: 1000
nChans: 64
nSamples: 74520
nSamplesPre: 0
nTrials: 1
label: {1x64 cell}
orig: [1x1 struct]
%Defining trials
trl = [];
trl(:,1) = [21:1000:74520-1000]';
trl(:,2) = [1020:1000:74520]';
trl(:,3) = 0;
%Data_EEG
cfg = [];
cfg.dataset = 'pd_mof_tr0_c_0306.cnt';
cfg.trl = trl;
cfg.blc = 'yes';
cfg.channel = hdr.label(rstindx);
cfg.implicitref='CZ';
cfg.reref='all';
data_eeg = preprocessing(cfg);
%Data_EMG
cfg.hpfilter = 'yes';
cfg.hpfreq = 10;
cfg.channel = hdr.label(emgindx);
cfg.refchan='M1';
cfg.blc='yes';
cfg.rectify = 'yes';
data_emg = preprocessing(cfg);
data = appenddata([],data_eeg,data_emg);
I get the error
??? Error using ==> appenddata
cannot determine how the data should be concatenated
This is because after including the reference channels with EEG channels are
61 and EMG channels are 5,
inorder to execute the DICS method with reference channel these steps are
necessary for the CSD to be complete
Is there a way to add the data with these two extra reference channels?
any comments on this would be appreciated
Thanking you
With regards
M.Muthuraman.
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