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> 1. how does one open the WM template in SPM? The GM image is displayed by > default, and there seems no obvious way to view the WM part of the file in > SPM. When you select the file via the file selector, you need to change the bit that normally just says "1". Change it to (eg) "1:2", and that will let you select both the first and second volume within the file. > 2. the DARTEL templates are generally smaller than MNI space. One can > normalise the DARTEL template to the GM prior (using normalise), and this > seems OK but the quality of the image is degraded. Is there a way to > without such a loss in quality of the image? Try setting the voxel sizes of the normalised data to a higher resolution than the default isotropic 2mm. This is somewhere on the "Write Normalised" user interface. Best regards, -John