[Freesurfer] Overall maxima is high and still no significant cluster

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Hi FS experts,

I am estimating the group-behavioral thickness interaction using contrast 2 FSGD file: https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf2G2V at CFT < 0.01 and CWT < 0.05 at FWHM of 12 mm.

I do not find any significant clusters and my output summary text file looks like the following. This file shows that overall maxima is 4.58212 (which corresponds to p < 0.0001 because -log (0.0001) = 4, so I am just wondering despite the fact that maxima is > 4, why I do not see this cluster in the summary/output *.mgh file?

I would really appreciate any clarification and tips to modify my input thresholds so that I do not miss any significant findings here.

Thanks. -----------------------------

# SearchSpace_mm2 76467.1 # SearchSpace_vtx 149953 # Bonferroni 2 # Minimum Threshold 2 # Maximum Threshold infinity # Threshold Sign abs # AdjustThreshWhenOneTail 1 # CW PValue Threshold: 0.05 # Area Threshold 0 mm^2 # CSD thresh 2.000000 # CSD nreps 10000 # CSD simtype null-z # CSD contrast NA # CSD confint 90.000000 # Overall max 4.58212 at vertex 10608 # Overall min -2.84277 at vertex 75476 # NClusters 0 # FixMNI = 0 # # ClusterNo Max VtxMax Size(mm^2) MNIX MNIY MNIZ CWP CWPLow CWPHi NVtxs WghtVtx Annot