problems making a template grid

[Andreas Wollbrink]

Hi Ingrid,

Thanks for the info on the different MRI templates and their specific gain.

Have a nice weekend too,
Andreas

On 04/16/10 17:51, Ingrid Nieuwenhuis wrote:
> Hi Andreas,
>
> 1, I added a comment on the wiki, thanks for your suggestion
> 2, 'T1.mnc' is a smoothed template based on multiple subjects, to deal with
> between subject variation in anatomy. This is needed for proper
> normalization. Template distributed with spm (in templates folder)
> 'single_subj_T1.mnc' is a single subject template, needed for proper
> segmentation. Also added this comment on the wiki.
>
> Have a nice weekend,
> Ingrid
>
> ------------------------------------
> Ingrid L.C. Nieuwenhuis
> PhD student
> Donders Institute for Brain, Cognition and Behaviour,
> Centre for Cognitive Neuroimaging
> Radboud University Nijmegen, The Netherlands
> Email: ingrid.nieuwenhuis at donders.ru.nl
> Tel: 0031 (0)24 - 36 10887
>
> -----Original Message-----
> From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
> Of Andreas Wollbrink
> Sent: Wednesday, April 14, 2010 10:21 AM
> To: FIELDTRIP at NIC.SURFNET.NL
> Subject: [FIELDTRIP] problems making a template grid
>
> Hi all,
>
> I encountered some problems generating a template source grid as
> described in the fieldtrip example matlab script 'Create MNI-aligned
> grids in individual head-space':
>
> 1. in chapter 'Make the template_grid': Without defining a template
> image in the cfg structure prior to use ft_volumesegment the default
> setting cfg.template = '/home/common/matlab/spm2/templates/T1.mnc' is
> used. Since this file might not exist in this specific folder on a
> personal computer the function fails.
> After defining cfg.template I succeed in using the function.
> It might be helpful for others to add this comment to the example script.
>
> 2. My question at this point is: Should one use the individual template
> 'single_subj_T1.mnc' or the average template 'T1.mnc' to segment the
> template brain and construct a volume conduction model?
>
> 3. Furtheron the function 'prepare_dipole_grid' could not be found. This
> functions is placed in the private folder under fieldtrip. How can I
> automatically add this folder to my matlab path?
>
> Thanks,
> Andreas
>

--


======================================================================

   Andreas Wollbrink, Biomedical Engineer

   Institute for Biomagnetism and Biosignalanalysis       	
   Muenster University Hospital

   Malmedyweg 15        phone:   +49-(0)251-83-52546
   D-48149 Muenster     fax:     +49-(0)251-83-56874	
   Germany
                        e-Mail: a.wollbrink at uni-muenster.de

======================================================================

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