Hi Abraham
> I've used the ImCalc function in SPM8 to get a masked image (group over individual). However, at present I can only display the masked image itself using SPM, but cannot add it to the SPM.mat file. As a result, I still cannot see the masked activation pattern through SPM 'result' display function. Thus I'm still not able to define VOIs on this masked image. Does anybody know how to solve this problem?
What I would probably do is specify the mask when you run your first
level analysis as an explicit mask. This might involve estimating a
model again but it will be the cleanest way. Then, only voxels
included in the mask will be estimated, and you can extract your VOIs
from those.
Hope this helps,
Jonathan
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