I have a question related to 3dclustsim correction for a ROI analysis, I hope you may be able to advise me.
Next to a whole brain analyses, we have some hypotheses related to specific regions, so we plan to run some tests within (quite an extensive) ROI.
Is it necessary to apply the ROI mask to both 3dFWHMx and 3dClustSim commands? Or could I use the same acf values and/or cluster thresholds as for the whole brain analysis?
Kind regards, Rozemarijn