Hi Akemi, I'm not sure I agree that area and thickness can't be independent. You could for example scale a spherical shell to be a smaller volume and area, but a constant thickness. In any case, you can get the #s you want from mris_anatomical stats:
mris_anatomical_stats $subject $hemi white mris_anatomical_stats $subject $hemi pial should give you global values for the white and pial surfaces. cheers, Bruce On Wed, 28 Apr 2004, Akemi Tomoda wrote: > Dear list, > > According to the results by running FS in our subjects, I have come to > realize that the cortical surface area and gray-matter volume shrinks, while > the cortical thickness tends to increase with a highly localized area of > cortical thickening in the left hemisphere. > > To my knowledge, these two variables (area, thickness) can not possibly be > independent. So there must be a relationship because volume = area * > thickness. > > In order to test it statistically and look into the problem of interaction > between thickness and area, I'd like to get the values of total out cortex > surface area and total inner cortex surface area, separately. > > I know FS use the white surface for surface area from the past ML (Pial > Surface). I was wondering how I can get each value for out and inner cortex > surface area. > > Any suggestions are very welcome. > > Akemi > > Developmental Biopsychiatry Research Program > McLean Hospital > [EMAIL PROTECTED] > > > > > Any information, including protected health information (PHI), transmitted > in this email is intended only for the person or entity to which it is > addressed and may contain information that is privileged, confidential and or > exempt from disclosure under applicable Federal or State law. Any review, > retransmission, dissemination or other use of or taking of any action in > reliance upon, protected health information (PHI) by persons or entities other > than the intended recipient is prohibited. If you received this email in error, > please contact the sender and delete the material from any computer. > _______________________________________________ Freesurfer mailing list [EMAIL PROTECTED] http://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
