Hi Herve,
> I looked for an answer in the SPM list but i did not find it. I'm using the
> last Gaser's VBM toolbox (version 1.10b). When I looked the output images,
> they seemed to be less blurred than with the original Segment button or the
> previous VBM toolbox. It seems that the Unified segmentation adds a
> extra-smoothing step at the end of the procedure while in the new Gaser's
> toolbox this step is removed.
> Do we know the usefulness of this extra-smoothing?
I would be surprised if there was an explicit smoothing step there... I
would rather think that one of Christian's enhancements produces
segmentation results that are a bit more crisp. This could be the
no-priors option or the application of the hidden markov random field.
Does this also occur if you use the exact same parameters?
Best,
Marko
--
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Marko Wilke (Dr.med./M.D.)
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Universitäts-Kinderklinik University Children's Hospital
Abt. III (Neuropädiatrie) Dept. III (Pediatric neurology)
Hoppe-Seyler-Str. 1, D - 72076 Tübingen
Tel.: (+49) 07071 29-83416 Fax: (+49) 07071 29-5473
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