I think you can do this by creating a label out of each overlay, then 
calling mask_label from the tcl command line in tksurfer.

cheers
Bruce

On Fri, 28 May 2010 [email protected] wrote:

> HI!
>
> Is it possible do generate masks out of two (or more) different overlays (
> name.w file)/ contrasts, to then in the end display the overlapping
> acitvation in a new overlay?
>
> The aim would be to get/create ROIs/Labels, which are already masked for
> plotting their timecourses.
>
> How could this work for the single subject?
>
> I hope someone has an idea??? I'm already a bit desesperate..
>
> Thanks a lot-
> Natlaie
>
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