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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
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