Space alignment - once again
jan.schoffelen at DONDERS.RU.NL
Mon Aug 16 09:34:25 CEST 2010
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.
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.
> 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
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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