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Dear experts:

I have a doubt about finding the medial wall mask of a subject.

Would this be ok?

mri_label2label --srclabel lh.cortex.label --trglabel lh.cortex.label --outmask lh.cortex.mask.nii.gz --regmethod surface --hemi lh --srcsubject 25633 --trgsubject 25633

fscalc lh.cortex.mask.mgz not -o lh.medialwall.mask.mgz

mri_convert lh.medialwall.mask.mgz lh.medialwall.mask.gii

If I use mris_decimate to downsample the surface does it change anything of previous and how should I proceed in that case to change it?

Best, Rene Andrade.