Dear SPM and CAT12 experts,
I am currently running a VBM analysis and using a 0.2 absolute threshold mask during statistical analysis. However, when I look at the mask.nii file it seems that a lot of grey matter and the right thalamus are missing from the mask. I have attached a screenshot above.I am fairly new to VBM and I was wondering why could this be happening? When I create a mean mask of all normalized grey matter images and then threshold it to 0.2 the mask looks more normal. I appreciate your help.
Best wishes,
Eleni
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