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<body class='hmmessage'><div dir='ltr'>Dear FieldTrip users<br><br>I am trying to compute PDC from a set of EEG data from 10 subjects. I have three questions regarding connectivity analysis.<br><br>1) Since the data has artifacts (EOG,EMG) , would it be alright to preprocess the data using for ex. ICA ? This wikipedia article says, its not advisable : http://en.wikipedia.org/wiki/Brain_connectivity_estimators#DTF_and_PDC_are_not_influenced_by_volume_conduction. What would be your opinion ? Is there any article that would shed some light on this ?<br>2) How do I compute the model order in FieldTrip ? Before that, how can I check if the data is stable and stationary before computing the MVAR model in FieldTrip ?<br>3) How do I compute the threshold for PDC above which I can safely assume, a link exists between two regions ?<br><br>Thanks in advance.<div>Subbu</div> </div></body>
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