beamformer source localization for EEG

[Jess R. Kerlin]

Hi FTers,

I'm using a 128 electrode Biosemi EEG system, attempting to perform
beam-former source analysis. I had go all the way back to Matlab 6.5 and
SPM 2, as well as some trial and error to get through it,  but I finally
managed to get a nolte BEM  using mostly the same code as in the example
script "BEM head model for EEG" script". However, prepare_leadfield
throws the error "unsupported volume conductor model for EEG", which is
clearly the case looking at the prepare_leadfield code.

A few questions on this topic:

Does fieldtrip actually support beamforming source localization on BEM
models for EEG? Or, given the coarser spatial resolution of EEG, is it
better to use a simpler spherical model?  Either way, does anyone have
successful sample code for beamformer localization EEG data, start to
finish?

And for the developers:
I love your work.
I notice the move from SPM 2 to SPM 8 is in the development cue.  Is
there any release coming soon which will use SPM 8 to make this process
smoother?

Many thanks,

Jess Kerlin

Robert Oostenveld wrote:
> On 9 Jul 2009, at 4:43, Andrei Medvedev wrote:
>> Q1. Is it a correct sequence of steps to do source reconstruction for
>> EEG data in Fieldtrip or do I need to do something more different?
>
> Hi Andrei
>
> You'll also have to ensure that the EEG data that you are analyzing is
> average referenced over all electrodes that you intend to use during
> source reconstruction. The averager referencing should be done prior
> to freqanalysis.
>
> best regards,
> Robert
>
> ----------------------------------
> 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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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.