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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:black'>Dears,<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>I want to cluster my 61 electrodes EEG data for three groups of people each group has 10 subjects and each subjects has three conditions. <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>I would like to analyse ERSP and ERP and to use MPT clustering method. MPT suggest to use one feature at the time, so I will create separate studies for ERSP and ERP. I would like to be able to compare clustering of ERSP and of ERP as these two variables might not necessarily have the same clusters.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>My questions are:<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>1. Should I select the same ICAs for ERP and ERSP? Though this might sound a common sense, by visual inspection of ICAs I've noticed that some ICs have very strong ERP while not much is going on in ERSP and vice-versa, some have very little ERP with strong ERSP. Therefore taking common components for both might blur results for both ERP and ERSP.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>2. In case I should not use the same components, may I produce two ICs sets, one filtered at 0.1Hz for ERP and the other filtered with 1Hz for ERSP. That is because filtering with 1Hz for ERSP really helps removing a baseline drift and I get clearer ICs then when filtering with 0.1 Hz (which is necessary should I analyse ERP)?<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Would I still be able to compare spatial locations of ERP and ERSP clusters?<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Thank you very much for your help.<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Best regards,<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'>Mohammed<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>