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Dear Farzad, You should only correct the FWE threshold. The cluster-forming threshold determines what kind of features your analysis is sensitive to and should be kept fixed throughout. Best, Vladimir On Wed, Aug 19, 2015 at 8:11 PM, Farzad Beheshti <[log in to unmask] > wrote: > Hi Vladimir > > > I am wondering if you know how we do post-hoc analysis for SPM. > I have performed a 2x2 ANOVA (simple effects analysis) with cluster > forming threshold of 0.01 and FWE rate correction = 0.05 for EEG. > > Now, to do post-hoc analysis, should I correct both of these thresholds or > only FWE; i.e. 0.05/4? > > Thanks for all your helps and considerations > > Farzad > Regards >