There is a paint file that comes with many of the PALS-B12 datasets (e.g., Sept 
2006 tutorial) that has a medial wall column.  Use that as the primary overlay 
with your metric or other overlay as the secondary overlay.  This grays out the 
medial wall.

On Nov 9, 2014, at 10:43 AM, Frédéric Roux <> wrote:

> Hi there,
> I've finally managed to get to visualize my MEG source-reconstruction data 
> using caret !!!
> So far I am very satisfied with the way everything looks.
> The only thing that's missing is a way to black out the sub-cortical areas? 
> I've seen
> people do this regularly in their publications and I would like to do the 
> same as from
> what I understand the PALS-B12 surface is only meant for cortical 
> representations?
> I could basically try to null all the values which lie below a certain 
> coordinate of
> the Z-axis in my data, but I was wondering if there is a simple and easier 
> way to do
> it in in Caret.
> Any help or suggestions would be highly appreciated.
> Thanks.
> Fred
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