Dear Shana,
the default value of 1.5mm can be used even if your actual voxel size is smaller. After spatial registration and smoothing your effective spatial resolution will be lowered and the value of 1.5mm is a good compromise.
Best,
Christian
On Tue, 24 Nov 2015 11:19:00 -0500, Shana Burrowes <[log in to unmask]> wrote:
>Dear SPM community,
>
>When running pre-processing in VBM is it best to use the default voxel size
>for normalized images which in VBM12 is 1.5 or can I use a lower voxel size
>such as 1.
>
>Also would it be better to use the actual voxel size of my images?
>
>Regards,
>
>Shana
>
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