How much of a difference is there? There should not be much, but there will be some because the aparc does not cover the exact same vertices as cortex.label doug

On 3/24/14 8:04 AM, _andreia_@sapo.pt wrote:

Hello list,

I have a question regarding what stats are more correct to use to get whole hemisphere surface area and mean thickness.

The cortex.label values extracted using the two bottom command lines don't match aparc stats, however they match in the number of vertices between them, and using pial or white surface also results in values that make sense comparing each one (higher surface area using pial, same thickness, same volumes).

In the past I've been using the two first command lines (in which values agree in the same way as cortex.label between them but are also in agreement with aparc.stats), however now I'm having this question: which one is the correct one to use?

And why does this difference exists?

mris_anatomical_stats -l ../label/lh.cortex.label -f lh.total.stats -b SUBJ lh white (matches aparcstats)

mris_anatomical_stats -l ../label/lh.cortex.label -f lh.total_pial.stats -b SUBJ lh pial (matches aparcstats)

mris_anatomical_stats -mgz -f ../stats/lh.cortex_pial.stats SUBJ lh pial (does not match aparcstats)

mris_anatomical_stats -mgz -f ../stats/lh.cortex_white.stats SUBJ lh white (does not match aparcstats)

Thank you in advance, Andreia _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer