Space alignment - once again

Paul Czienskowski paul_c at GMX.DE
Mon Aug 16 10:48:26 CEST 2010


  Hi Jan-Mathijs,

thank you very much. Since I'm trying to compare different models I'll
have to do the alignment with the nasion-pre auricular space but I'm
already on it. Just needed the info if I was carrying owls to athens.

Cheers,
Paul

Am 16.08.2010 09:34, schrieb jan-mathijs schoffelen:
> Hi Paul,
>
> The simulation routine doesn't care about the co-registration between
> the volume conductor model and the sensor array. It is your
> responsibility to ensure that they are correctly aligned. The sources
> need to be in the same coordinate frame as the sensors, so that's I
> guess what you refer to as fiducial space. Obviously, if your sensor
> positions are expressed in voxel space, you need to specify your
> sources in voxel space as well.
>
> Goood luck,
>
> Jan-Mathijs
>
>
> On Aug 16, 2010, at 9:02 AM, Paul Czienskowski wrote:
>
>> Dear Fieldtrippers,
>>
>> I asked this some days ago and didn't get any answer. I don't want to
>> spam, but I need to know strongly.
>> I wasn't able to find out yet, if the space the dipoles are simulated
>> if I'm running ft_dipolesimulation is in some manner aligned to the
>> fiducial space, or if it's all based on the voxel coordinates. It
>> would be a great help, if someone knew the answer.
>>
>> Cheers,
>> Paul
>>
>> --
>> Paul Czienskowski
>> Björnsonstr. 25
>> 12163 Berlin
>>
>> Tel.: (+49)(0)30/221609359
>> Handy: (+49)(0)1788378772
>>
>> ----------------------------------
>> 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.
>>
>
> Dr. J.M. (Jan-Mathijs) Schoffelen
> Donders Institute for Brain, Cognition and Behaviour,
> Centre for Cognitive Neuroimaging,
> Radboud University Nijmegen, The Netherlands
> J.Schoffelen at donders.ru.nl
> Telephone: 0031-24-3668063
>
> ----------------------------------
> 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.


--
Paul Czienskowski
Max Planck institute for human development
Björnsonstr. 25
12163 Berlin

Tel.: (+49)(0)30/221609359
Handy: (+49)(0)1788378772

----------------------------------
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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