Hi Doug,

Thanks for the prompt reply to what was essentially a 2-part question. Data were processed in both fsaverage and native space for different reasons, which is why I suggested the possibility of surface space incongruency on at the end, which your reply seemed to make more likely. It turns out that this was indeed the case, and so this thread will likely pop up in some google search by a future student who will no doubt have a similar problem. However you have also answered my second embedded question by confirming that what I was proposing seemed sensible at face value. Thanks again for your time.

What you have described should work. The residuals will be in whatever space the analysis was made in (mkanalysis-sess). What ROI are you trying to get an average over? What are your mkanalysis-sess and mri_segstats commands?

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