Dear Freesurfers,

After running the first tests of freesurfer 5.2, I found a file named $hemi.w-g.pct.stats on the stats folder. The last column of the file is a SNR calculation, i found on the help manual, that is required to add --snr to perform this calculation.

I'm interested to know how this SNR is calculated. Is there any method or paper  related?

Thank you in advance,