Source filtering

[Nathan Weisz]

hi jess,

in the source analysis module of BESA you can create / save a source
montage (e.g. based on ERP peak /peaks). then you can apply this
montage to the raw data within BESA (haven't done it for a long time;
look at the BESA-help). After that export the source projected data
and read in matlab via besa2fieldtrip (that gives you a fieldtrip
preprocessing structure).

i.e. no need to do the single trial source projection in fieldtrip.
also i can't remember it was possible to export leadfields out of
BESA, but i may be wrong.

good luck,
nathan

On 13.05.2009, at 22:37, Jess R. Kerlin wrote:

> Dear FTrippers,
>
> I created a standard 2-dipole model in BESA from a 128-electrode EEG
> array, and I would like to apply this as a filter on separate single
> trial data, to reduce each trial from 128 channels to 2 source
> waveforms. The external function readBESAbsa appears to load in the
> dipole locations and orientations correctly, however, I am unaware
> of a function which uses this information to filter the data as
> described above. Any input is appreciated.
>
> Thanks,
> Jess
>
> ----------------------------------
> 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.

----------------------------------
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.