dipolefitting output format

[arno delorme]

The dipplot function can plot dipoles from spherical models or dipoles
in MNI coordinates. I happens that these two models are oriented with
90 degrees different (the nose points toward different directions).
Also the transformation to plot on the MNI brain is different.

In the spherical cases, spherical coordinates are transformed to MNI
coordinates first using the sph2spm function.

So if you used a MNI model to locate your dipoles, you must enter the
'coordformat', 'MNI' option.

Hope this helps,

Arno

On 10 févr. 09, at 12:18, Szymon Piłat wrote:

> I have some doubts about format of dipolefitting's output.
>
> I have wrote the scirpt which use dipolefitting. Finally I have the  
> line:
> dip1 = dipolefitting(cfg, avg1);
>
> So I have dipole coordinates in "dip1" variable.
> I tried to visualise it with:
>
> source.posxyz = dip1.dip.pos;
> source.momxyz = dip1.dip.mom;
> source.rv = dip1.dip.rv;
> dipplot(source);
>
> I can also use the following instead of the previous one:
>
> dipplot(source_plot, 'coordformat', 'MNI');
>
> Difference between
>
> dipplot(source)
>  and
> dipplot(source, 'coordformat', 'MNI')
>
> is very important - it is visualised in completely different location.
>
> My question is: what coordinates does the dipolefitting use at the  
> output?
> How should I properly visualise its output?
>
> Thank you all in advance!
>
> Kind regards,
> Szymon
> ----------------------------------
>
> 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.
>
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>
> http://www.ru.nl/fcdonders/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/fcdonders/fieldtrip.