[Freesurfer] Extracting lGI Values

Hello,

I am attempting to extract lGI values (i.e., similarly to *.stats in #SUBJ/stats) with the following (generic) command:

$mris_anatomical_stats –a aparc.annot –t pial_lgi –f #SUBJ/stats/lh.aparc_lgi.stats #SUBJ lh

However, this newly generated lh.aparc_lgi.stats is the exact same as the lh.aparc.stats, which is originally and readily in the /stats folder, and does not contain values for lGI. Thus, I cannot proceed with aparcstats2table to write and export the values.

I have read through this thread [https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2010-November/016339....], but it did not seem to help since the demonstrated results were to out thickness.

Thank you for your assistance!

-Tin