What is your mri_segstats and mri_surfcluster cmds? The area computed 
from the triangles of the fsaverage subject are not representative of 
the average of the individual subjects that go into fsaverage. For this 
reason, we usually use the lh.area file inside of fsaverage to compute 
the area (this lh.area file is an average of the individual subjects). 
It may be that you are using both methods and so get different answers.
dogu

MCLAREN, Donald wrote:
> I've noticed that if I run mri_surfcluster to produce a label file, 
> then merge the labels into a single label using mri_mergelabels, then 
> mri_segstats with the slabel option with the fsaverage subject; I get 
> different surface areas from mri_surfcluster (summed all the cluster 
> areas) and mri_segstats (1 area). Is there something wrong with my 
> implementation of these three commands or is it expected that the two 
> methods would produce different values?
>
>
>
> Best Regards, Donald McLaren
> =================
> D.G. McLaren, Ph.D.
> Postdoctoral Research Fellow, GRECC, Bedford VA
> Research Fellow, Department of Neurology, Massachusetts General 
> Hospital and
> Harvard Medical School
> Office: (773) 406-2464
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