Dear Andreas,
> shouldn´t that read
> -1*i1
The mask.img contains 1s for areas inside the brain and 0 for the rest. I
would imagine that what was wanted was an image with 1s outside the brain and
0s within, which is what you get with 'i1==0'. With '-1*i1' you get -1s in
the brain and 0 without, which will I guess display the same, but is a rather
odd mask...
Best,
Matthew
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