Dear freesurfers,
comparing patient groups I found volume differences in specific cortical regions (using aparc_stats), which I would now like to compare to the results of a classical VBM. Concerning the whole brain analyses, the VBM did not yield comparable results (what might partly be a matter of stringent p-values controlling). To rule out that possibility (and to make the methods more comparable), I would like to do a ROI-based analysis specifically in those regions where I found the group differences with freesurfer. Therefore (and this is my question) I would like to create ROIs based on the labels of the Desikan atlas. I did not yet build a specific average subject for my population and would rather prefer to use one basing on bigger population sizes... which one could I use for this purposes? Bert? Or fsaverage? Or might there be an even more appropriate one for the use in cortical parcellations?
Thank you for your help!
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