1. It is the signed dot product of the movement vector with the outwards
pointing surface normal of the white matter surface during inflation.
2. Yes, because moving inwards for gyri the dot product is negative.
3. Yes, I think so, although I'm not sure I understand.
4. mris_anatomical_stats can do this if you specify sulc as the "thickness"
file
On
Mon, 26 Sep 2016, Hanbyul Cho wrote:
Dear FreeSurfer Team,
I have questions about the sulcal depth.
1) I heard that the output/surf/?h.sulc is showing the sulcal depth.
Is it correct that the sulcal depth measure unit is normalized z-score, mm?
And is
it correct that the (-) values of sulcal depth mean gyral region (green), and
(+)
values mean sulcal region (red)?
2) I wonder if ?h.sulc is based on white matter surface or pial matter surface.
3) I analyzed the sulcal depth by vertex-level. if the results include the sulc
(-)
values region, Is it meaning that the gyral height?
4) I wonder the method/commands for extracting the sulc value by label-level.
5) Could you let me know the recommended smoothing option if it possible? (e.g.
--fwhm-trg [N])
I appreciate your help.
Thank you.
Han Byul Cho
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