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function list_properties = epoch_properties(EEG,eeg_chans)
list_properties = [];
if length(size(EEG.data)) < 3
fprintf('Not epoched.\n');
return;
end
measure = 1;
means = mean(EEG.data(eeg_chans,:),2);
% 1 Epoch's mean deviation from channel means.
for u = 1:size(EEG.data,3)
list_properties(u,measure) = mean(abs(squeeze(mean(EEG.data(eeg_chans,:,u),2)) - means));
end
measure = measure + 1;
% 2 Epoch variance
list_properties(:,measure) = mean(squeeze(var(EEG.data(eeg_chans,:,:),0,2)));
measure = measure + 1;
% 3 Max amplitude difference
for t = eeg_chans
for u = 1:size(EEG.data,3)
ampdiffs(t,u) = max(EEG.data(t,:,u)) - min(EEG.data(t,:,u));
end
end
list_properties(:,measure) = mean(ampdiffs,1);
measure = measure + 1;
for v = 1:size(list_properties,2)
list_properties(:,v) = list_properties(:,v) - median(list_properties(:,v));
end |