Hi Freesurfer team We are sampling diffusion images below the WM surface , and would like to visualize with tkmedit or freeview the surface itself to see if it is appropriate to our analysis (not the surface overlay, but the surface as a line like the one that are on the surfs directory). I couldn't find how to do it but maybe I didn't choose the correct keywords in the archives! Thanks so much for you help! Céline