Hello FreeSurfer experts,

I am trying to create a group average of labels defined on inflated surface, and so far I tried mri_label2vol which succesfully got the labels to volume space and binarized for averaging, however when I sample this back to the inflated surface of fsaverage, using mri_label2label, the location is completely wrong and the label looks very distorted. I tried to use mri_vol2surf and mri_vol2roi instead for the latter portion and both did not work. Do you have any suggestions? I think mri_vol2surf can work if I have a register.dat file for fsaverage vol->surf but so far I didn't come across one and couldn't see how to create one.

Also I think if I can create overlays out of the labels, then I can do mri_concat to average them out and with mri_cor2label get them out as labels again. However I did not come across a script that creates overlays out of labels.

Thank you for all the thoughts and suggestions

Best
Idil