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Hello,

I have a surface measure calculated for each of my subjects, which I have
already resampled and smoothed on fsaverage using mri_surf2surf, i.e for
each subject I run:
mri_surf2surf --hemi <hemisphere> --s fsaverage --sval <surfMeasureSubjX>
--fwhm <FWHM> --cortex --tval <output>

I now want to stack the outputs of the commands above, so that I can give
the stacked image as an input to PALM. I think I should use mris_preproc
for that, but I'm not sure if the subjects (the argument after the --s
flags) should be the original subjects or fsaverage - given that my surface
measures are already resampled to fsaverage.

That is, I'm not sure if the correct command is (for 2 subjects)

mris_preproc --out <outfile> --target fsaverage --hemi <hemisphere> *--s
subj1 --s subj2* --is <surfaceMeasureFileSubj1> --is
<surfaceMeasureFileSubj2>

*or *

mris_preproc --out <outfile> --target fsaverage --hemi <hemisphere> *--s
fsaverage --s fsaverage* --is <surfaceMeasureFileSubj1> --is
<surfaceMeasureFileSubj2>

Thanks!
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