That number is in voxels or vertices. If you want surface area, then use 
mri_segstats something like
mri_segstats --i $SUBJECTS_DIR/fsaverage/surf/lh.white.avg.area.mgh 
--seg glmdir/mask.mgh --id 1 --accumulate --sum sum.dat

doug

On 10/29/15 5:10 PM, Jeni Chen wrote:
> Hello,
>
> When running the Clusterwise Correction for Multiple Comparisons, I used a 
> label as a mask to restrict search area. I want to find out the size of that 
> label, so I guess I can pull that information out from the "mri_glmfit.log", 
> specifically under 'searchspace'? Also I only see a numerical value there, I 
> assume it is in mm2?
>
> Thanks.
>
> Jeni
>
>
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