Hi Damien,
yes, that's correct. The sulc is the integrated dot product between the
movement vector and the surface normal, so things that move consistently
outwards (like sulci) will be positive, and gyri will be negative.
cheers
Bruce
On Sat,
21 Sep 2013, Damien MARIE wrote:
Hello everyone,
I'm working on a group analysis of cortical thickness, surface
area, curvature and sulcal depth with FreeSurfer 5.3. However I'm in trouble
concerning the interpretation or the meaning of my results, especially
concerning curvature and sulcal depth.
I understood that curvature can be positive when it concerns sulcus or
positive in case of gyrus. According to my result it would be almost the
same for sulcal depth. The value of sulcal depth is positive on a sulcus
while it is negative on a gyrus.
Am I correct?
All the best,
Damien Marie
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