Hi Mahtab
you should look them up in a differential geometry textbook. Essentially,
a 2D surface has two curvatures at each point, one in the direction of
maximum folding (k1) and one in the direction of minimum folding (k2). The
Gaussian curvature is then k1*k2 and the mean is (k1+k2)/2
cheers
Bruce
On
Wed, 6 Jul 2016, Mahtab Farahbakhsh wrote:
Dear FreeSurfer,
I am using the mris_anatomical_stats output to calculate the curvature and
thickness indices for different brain areas. However, I am not sure what the
mean
and gaussian curvatures mean. I could not find a complete description on these
two. Would you please guide me what principle curvature and mean and gaussian
curvatures means exactly?
I appreciate your concern in advance.
Best Regards,
Mahtab.
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.
