Dear Fellow Surfers,
Is there a FreeSurfer way to mask a stat map overlay, on the inflated cortical surface, in a way that the masked vertex points
(a) are transparent in the overlay display (just the underlying dark gray/light gray curvature is showing)?
(b) do not effect label-specific HDR time courses (i.e., only unmasked vertex points are taken into account when calculating the HDR curve)?
We can edit the stats map with our custom script to generate the mask (e.g., mark all masked vertex points as 0 in the overlay), but it seems that in a stats map every vertex point needs to have an overlay value (i.e., we cannot just skip the vertex points we want to omit - right?).
Thanks!
-Tommi
--- Tommi Raij, M.D., Ph.D. MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging Bldg 149, 13th St Charlestown, MA 02129 U.S.A.