Hi freesurfer experts,<br>It seems to me the pial surface should be the
surface of gray matter, but when I overlay functional activations on
it, it seems to be surface of white matter.<br>The reason I think so is that when I load the same activation in both tksurfer and tkmedit, <br>
if I click on an activated area (or any point) on the pial surface in
tksurfer, save it, and load it in tkmedit, the point will land on the
yellow/green lines while the tksurfer and tkmedit show the same
talairach coordinate for the point.<br>
If I click on a point that is on the red line in tkmedit, save it, and
load it in tksurfer, they (tkmedit and tksurfer) show different
talairach coordinates for the points.<br>Question: what is the truth and what should I expect?<br>
Thanks,<br>George<br><br>