Hi William,
you can use freesurfer's pctsurfcon to compute the gray/white contrast
on the longitudinal directories. This will produce a surface overlay
at: tp.long.base/surf/?h.w-g.pct.mgh
I don't think the long_mris_slopes script can deal with those files
directly, so you have two options:
-
External Email - Use Caution
Dear FreeSurfer experts,
I am currently running a longitudinal analysis in FreeSurfer v5.3 to look
at changes in volume and gray/white contrast. I ran all the processing
steps and used this command below to look at results for volume:
