2012/10/30 Bruce Fischl <fischl@nmr.mgh.harvard.edu>

Hi Daniel

the parcellations are not uniform in size, and therefore the average of them will not be the same as averaging over the cortex.

cheers
Bruce

On Tue, 30 Oct 2012, Daniel Ferreira wrote:

Hi,
I was wondering what should I use as an average of cortical thickness for
the whole cortex. 

The aparc.stats output gives a value of "Mean Thickness" for each
hemisphere. But this value does not coincide with the one I get if I average
the 34 variables from aparc.stats. Do you know why?

thanks so much in advance

Daniel

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