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Dear FreeSurfer experts,
what is the difference between the following 2 files found in a subject's surf/
directory:
* file #1: lh.area.fsaverage.mgh
* file #2: lh.area.fwhm0.fsaverage.mgh
I see in the logs (<SUBJECT>/scripts/recon-all.log), that file #2 is generated
from file #1 by running the following command:
mri_surf2surf --prune --s fsaverage --hemi lh --fwhm 0 --sval
lh.area.fsaverage.mgh --tval lh.area.fwhm0.fsaverage.mgh --cortex
I know that if fwhm > 0, spatial smoothing will be applied. But what happens if
fwhm is 0? From a quick comparison of the data in both files, they seem to be
identical, but the hashes of the files differ. Is the difference only about the
header?
Thanks for your help,
--
Dr. Tim Schäfer
Postdoc Computational Neuroimaging
Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy
University Hospital Frankfurt, Goethe University Frankfurt am Main, Germany
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