Hi Bruce:
As you know - along with Volume, Thickness and SA, FS also gives curvature numbers for the 5 subregions of the CC. In my dataset, which is comparing High risk offsping of SZ subjects and healthy controls, the curvature numbers show a siginficant difference (p < 0.03) between the groups. In addition these curvature numbers are negatively correlated with aspects of cognition such as working memory and attention (p < 0.002).
I am finding difficulty interpreting the results since I am unsure how curvature is measured.
thanks,
Alan
On Mon, Aug 16, 2010 at 7:18 PM, Bruce Fischl fischl@nmr.mgh.harvard.eduwrote:
Hi Alan,
which curvature index do you mean?
Bruce
On Mon, 16 Aug 2010, Alan Francis wrote:
Hi All:
Does a lower score on the curvature index of the CC (as done by FreeSurfer) imply that the Corpus Callosum is more curved (smaller radius) or is it the other way around?
thank you,
Alan
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Alan Francis Brain Spectroscopy and Neuroimaging Lab Beth Israel Deaconess Medical Center Dept of Psychiatry Harvard Medical School Boston 02215
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