manually specifying fiducial positions in MRI structure

Vladimir Litvak v.litvak at ION.UCL.AC.UK
Sat Apr 17 16:58:39 CEST 2010


It's not the same that's the point, Markus. Try doing exactly as I say
and then see if it works.

Vladimir

On Sat, Apr 17, 2010 at 3:22 PM, Markus Bauer <m.bauer at ucl.ac.uk> wrote:
> Hi Vladimir
>
>> When building the head model SPM generated some .gii files that should
>> be at the same location where your individual MRIs were. If you load
>> the one corresponding to the cortex with something like:
>>
>> m = export(gifti('filename.gii'), 'ft');
>>
>> you can take m.pnt and put it in the source structure instead of
>> source.pos there.
>
> thanks, I actually had used this structure to define the grid-positions for
> the leadfields (in one approach)
>
> grid.pos = forward.forward.mesh.vert;
>
> obtained from the headmodel.
> I had been struggling to interpolate this to an anatomical MRI but will look
> more carefully into the link from Robert
>
> http://fieldtrip.fcdonders.nl/example/create_single-subject_grids_in_individual_head_space_that_are_all_aligned_in_mni_space
>
> that you kindly sent me.
>
> Thanks a lot so far for your help!!
>
> Markus
>
> ----------------------------------
> The aim of this list is to facilitate the discussion between users of the
> FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG
> and EEG analysis. See also
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> http://www.ru.nl/neuroimaging/fieldtrip.
>
>

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/neuroimaging/fieldtrip.



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