I have performed a seed-based fcMRI analysis by FAST.

After mri_glmfit, I have obtained a sig.nii.gz which contains uncorrected results.

I have corrected by FDR using the graphical interface provided in tksurf.

The FDR corrected contains some very small areas (<5-10 voxels) which I would like to hide  in order to present a more clear map.

How is possible to do it?

I have tried with mri_surfcluster.

To have vwsig.nii.gz I should have a CSD file.

But this file could be also produced when FDR correction is applied?

I'm very confused.

Please, could you help me because from several days I'm trying to have a solution.

Thank you very much for your work.

Kind regards.

Stefano