[FieldTrip] event related fields from source space

[jan-mathijs schoffelen]

Dear Kaelasha,

Yes indeed, the source.avg.mom contains per dipole location an estimate of the event-related field/potential in the x/y/z direction.

You can reduce the dimensionality of these 3D time series by subsequently calling ft_sourcedescriptives with cfg.projectmom='yes';

Best,
Jan-Mathijs



On Oct 31, 2013, at 12:44 AM, Kaelasha Tyler wrote:

> FieldTripers,
> 
> I am wanting to reconstruct event related fields from source space and have been beamforming with ft_sourceanalysis using cfg.method='lcmv'.
> 
> I have not been able to find any clear instructors on this, but can any one tell me, does ft_sourceanalysis output 'data.avg.mom' contain the averaged ERPs reconstructed in source space?
> 
> data.avg.mom appears to be a column of cells, one cell for each point in my 3d grid, with each cell containing 3 time series (ERFs), one for each 3d orientation??, x, y, z?
> 
> Can any one tell me if this is indeed what I am looking at in data.avg.mom?
> 
> Regards,
> Kaelasha Tyler
> PhD candidate
> Swinbunre University of Technology
> Australia
> 
> 
> 
> 
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Jan-Mathijs Schoffelen, MD PhD 

Donders Institute for Brain, Cognition and Behaviour, 
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands

Max Planck Institute for Psycholinguistics,
Nijmegen, The Netherlands

J.Schoffelen at donders.ru.nl
Telephone: +31-24-3614793

http://www.hettaligebrein.nl

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