<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have a dataset of continuous EEG data (65 channels, 500 Hz). I import a list of events that have three different types (denoted 1,2,3). In my case this corresponds to events at different time points, early, mid and late during the recordings. I extract epochs based on the event types.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>After I perform ICA and reject the clear noise components the three event types/epoch types are lost and merged into just one event type (denoted by 1). This happens after I remove components. I can still see all three event types when I scroll through my data after performing ICA. However, after rejecting components I cannot see the individual event types anymore.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am asking this as I wish to average over my epochs according to early, mid and late during my experience. However, I want to make sure that for all three conditions I reject the same IC’s. That’s why I don’t want to isolate the three conditions first and then run the ICA on each one of them.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I would appreciate any support or help.<o:p></o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal>Hendrik<o:p></o:p></p></div></body></html>