Or reworded, which MNI space "version" are the tissue priors meant to reflect? spm_templates.man doesn't go into detail with that regard I'm afraid. In any case, the TPMs don't match slightly smoothed versions of the priors of the ICBM 152 Nonlinear atlases version 2009 http://www.bic.mni.mcgill.ca/ServicesAtlases/ICBM152NLin2009 (e.g. sulci pattern in temporal lobe is less "curvy" in the SPM version). Thus possibly the asymmetric version of the ICBM 152 Nonlinear atlases 6th Generation, as provided with FSL?
Best
Helmut
|