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Dear all! I would like to compare fMRI results obtained with different scanning techniques and wonder how to access the differences statistically. Number of “activated” pixels within a given cluster might be one possibility- another seems to be to use the size of effect. Does it make sense to compare the size of effect across volunteers and conditions/techniques? Are we allowed to average the size of effect between volunteers to compare technique A and B in order to access which technique is more sensitve? Does anybody have a better idea how to solve this problem? Thank you very much for your help in advance Sincerely yours, Martin Oels _______________________________________________________________________ 1.000.000 DM gewinnen - kostenlos tippen - http://millionenklick.web.de [log in to unmask], 8MB Speicher, Verschluesselung - http://freemail.web.de