Dear SPM-experts,
currently, I am analyzing a between-subject study, where subjects received the same pain stimuli under different conditions.
I would like to perfom a PPI analysis, analysing whether pain relevant areas are correlating with differently brain regions depending on the condition.
However, I have no idea how to create a PPI.mat, as I do not have different conditions within subject.
Is it possible at all, to perform PPI between subjects?
Thank you very much for your help!!
Carmen
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