Hello, 

I've overlayed two independent meta-analytic activations. Adjusting the colours and additive overlay function, I can view which regions overlap between the two studies in a different, third colour. Is there a way to view these overlapping activations alone, i.e. without the regions that do not overlap? I can achieve this two an extent by reducing the opacity of one of the overlays so that only the overlap is viewed, but when I additionally do this to the other set of activations, the overlapping regions too loose opacity and cannot be seen. 

Best, 
Molly