Hi Marko,
I discussed with Christian Gaser about that and he told me there was a smoothing and he removed it. I would prefer to use images without pre-smoothing but I would like to know if there is a specific reason to that in the original code.
Best
> 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
>--
>=====================================================================
>Marko Wilke (Dr.med./M.D.)
> [log in to unmask]
>
>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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