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Hi Kersten,

Thanks for this helpful summary.

It seems then that it’s best to apply the threshold to the *sig.mgh file and visualize its results since it contains the sign that specifies the direction of the interaction effect. Assuming this is the case, would an appropriate visualization of the results in Freeview be the following?

freeview \ -f $SUBJECTS_DIR/fsaverage/surf/lh.pial:overlay=lh_sig.mgh:overlay_threshold=4.4,10 \ -f $SUBJECTS_DIR/fsaverage/surf/rh.pial:overlay=rh_sig.mgh:overlay_threshold=4.4,10 \ --viewport 3d

Where the pcor value is 4.4 (pth = 0.000038474), based on the LME spatiotemporal tutorial, including both hemispheres. This appears overly strict; if I go to the Configure Overlay panel in Freeview and adjust the min Threshold value to 97.5 % (Use percentile), I get some results. I want to ensure that I’m applying the correction properly.

Thanks,

Dan