manually specifying fiducial positions in MRI structure

[Vladimir Litvak]

Hi Markus,

I need to write a more detailed answer when I have time and then
things will hopefully become clear. But for now...

On Mon, Apr 19, 2010 at 5:57 PM, Markus Bauer <m.bauer at ucl.ac.uk> wrote:
>> It's not the same that's the point, Markus. Try doing exactly as I say
>> and then see if it works.
>>
>
> grid.pos = forward.forward.mesh.vert;
>
> thx, but this (the upper) is correct for specifying the grid-points for the
> leadfields - or is that wrong already?
>

This is correct because these points are in MEG head coordinates in mm
as are the vol and the grad in SPM.

> m = export(gifti('filename.gii'), 'ft');
>
> whereas this is in the analyse-voxel format  - and can thus be used for
> overlaying source-results with individual anatomy ??
>

.gii is not analyze but a GIFTI format which is a format for storing
meshes. What you get are the points of the same mesh but corresponding
to your individual MRI so you can use them for ft_sourceinterpolate.

Vladimir

> Markus
>
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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.