Hi Robin
If you run-recon-all you will get a map that we call “sulc” for each subject.
When we generated our original manual parcellations we used it to guide where
to place the boundary between a sulcus and a gyrus. Essentially we used the
zero-crossing of sulc. Load it on an white surface and see if that works for
you.
Cheers
Bruce
From: freesurfer-boun...@nmr.mgh.harvard.edu
<freesurfer-boun...@nmr.mgh.harvard.edu> On Behalf Of Robin Cash
Sent: Wednesday, July 21, 2021 1:35 AM
To: freesurfer@nmr.mgh.harvard.edu
Cc: Andrew Zalesky <andrewzale...@gmail.com>
Subject: [Freesurfer] delineating gyral boundaries in native space
External Email - Use Caution
Hi,
Is there a tool within freesurfer that can be used to delineate gyral
boundaries (delineate sulci) from an individual's T1 scan in native space?
To be clear, the purpose wouldn't be to broadly identify or parcellate
different gyri, but to delineate the boundary between gyri and sulci.
Many thanks,
Robin
Dr. Robin Cash (PhD) | ARC Senior Research Fellow
Department of Biomedical Engineering,
UNIVERSITY OF MELBOURNE
Melbourne Neuropsychiatry Centre,
Level 3,
Alan Gilbert Building,
161 Barry St,
Carlton VIC 3053 Australia
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