Hello Annap,
this is probably due to the bounding box which is defined during normalization. Default values cut off some part of the cerebellum. What happens when adjusting the parameters (the z-coordinate defining the bottom end)?
E.g. instead of [−90 −126 −72; 90 90 108] (right now no SPM at hand, values might be different) change to [-90 -126 -100; 90 90 108].
Best,
Gabor
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