Dear SPMers,
Today I read through many of the posts regarding NaNs, however I am still
confused as to what would be the best remedy for my situation.
The problem is I keep on receiving NaNs for the p-vals on the second level
analysis. I tried changing the NaNs to 0s in the con images (which seem to
appear only or mostly outside the brain; and becasue I read not to do this
for the beta images) using ImCalc but that still doesn't work. I therefore
checked some files from some other studies we had previously done, and it
appears that setting voxels outside the brain to NaN is normal SPM behavior.
Is the fix for this then something that has to be modified within the SPM code?
Thanks,
Carlos Faraco
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