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Multiple channels (multivariate) signals
The technological progress in the biomedical field has led to the construction of
recording equipment which allows recording of activity from multiple sites. Today
a typical dataset contains not only two or four but dozens or hundreds of channels.
This is especially the case for EEG, MEG, and sometimes also for ECG and EMG
signals. Analysis of multichannel data can give a better insight into the relations be-
tween the investigated sites, but it is a challenging task. Besides many experimental
and computational difficulties, the problem quite often lies in the proper application
of existing mathematical tools. ...