[Eeglablist] Dipole Fitting - Dipoles' moment

Tarik S Bel-Bahar tarikbelbahar at gmail.com
Tue Jun 13 11:50:06 PDT 2017


Hello Nils, quick note below, best wishes.

I believe the eeglab approach is to use dipfit for finding dipoles
that accurately explain spatial IC maps, thus there is no temporal
information that the dipoles are explaining, in this case, in eeglab.

You probably need to get some way to get dipole fits over time, which
may require transitioning from eeglab to fieldtrip or brainstorm,
where surely that functionality exists.






On Mon, Jun 12, 2017 at 3:55 AM, Nils Hachmeister
<nils.hachmeister at uni-bielefeld.de> wrote:
> Hall again,
>
> my topic is still dipole fitting, but as this question is otherwise
> unrelated to my first question I gave it a separate post.
>
> When performing dipole fitting with EEGLAB-dipfit I only ever came across
> single 3-d vectors as representations for a dipole's moment. It is my
> understanding of dipole fitting that the dipole's moment should change over
> time, thereby generating the activity explaining the IC-activation (minus
> the RV).
>
> I understand that having one, adequately chosen moment (representation) per
> dipole during dipole fitting is handy. However, I intended to perform a
> connectivity analysis on the dipole-activation (more precisely on the
> moments' norm). Is there some way to obtain such information from the dipole
> model? Or is this the wrong approach?
>
> Best Regards
>
> Nils
>
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