[Freesurfer] Subtracting overlays

Hi,

Is there a way to subtract one surface overlay from another (for example in fsaverage) and still having the output being an .mgh overlay file? I saw that mis_calc does a similar procedure but automatically outputs the result as out.mgz.

Thank you for the help!

Kind regards, Tobias

_________________________________________ Tobias Granberg, MD, PhD

Post-doctoral research fellow A.A. Martinos Center for Biomedical Imaging Massachusetts General Hospital | Harvard Medical School

Resident in Radiology Karolinska Institutet | Department of Clinical Science, Intervention and Technology Karolinska University Hospital | Department of Radiology