Dear all, I would like to draw a ROI on a group average surface (template) and map it back to the surface of individual subjects. For this, I would like to create the template based on my subjects, rather than using fsaverage. As far as I understood, I should first create the template by using: make_average_subject –out myAvg –subjects s1 s2 … Then, I should register each subject to the template with: mris_register --curv s1/surf/lh.sphere SUBJECTS_DIR/myAvg/lh.reg.template.tif s1/surf/lh.sphere.reg.myAvg. At this point, I can map the ROI to a given subject by using the command mri_label2label: mri_label2label --srclabel labelName --srcsubject myAvg --trgsubject s1 trglabel OutputLabelName --hemi lh --regmethod surface. There is one thing I don’t understand: how can I tell the command mri_label2label that it should use the registration file that I have created in the previous step (namely lh.sphere.reg.myAvg)? If I don't specify anything, is the function going to use the sphere.reg file that refers to the registration between subject s1 and fsaverage? In general, is the pipeline I described correct?
Thanks a lot for your help. Best Roberta
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