Dear FS experts:

I am writting to ask for help about mri_mcsim. I would like to run mri_mcsim with only one FWHM (e.g. --fwhm 13) instead of FWHM=1:fwhm-max (the default is FWHM=1:30). Thus i tried:

mri_mcsim --o $FREESURFER_HOME/average/mult-comp-cor/fsaverage/lh/mask --base mc-z --surface fsaverage lh --nreps 100 --mask mask.mgh --fwhm 13

However, i got errors: ERROR: Option 13 unknown.

Is there any information that i missed ?

Thanks in advance for any suggestions.

Best

Zhiliang Long