GrayVol is the volume (mm3) of the gray matter for that stucture
ThickAvg is the average thickenss (mm) for that structure

On 6/11/2021 3:59 AM, Koustav Chatterjee wrote:

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Dear Sir/Madam,

Could you please tell what does it mean by 'Gray volume' and  'avg thickness' of various structures while we are parcellating cortical surfaces through FreeSurfer and getting 'aparcstats2table'. 
Thank you for your help.

Regards,
KC


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