[FieldTrip] beamformer on EEG data

Azeez Adebimpe azeez.adebimpe5 at gmail.com
Tue Sep 1 23:28:15 CEST 2015

Hi Jia,

Do you interpolate on the same MRI you used for  construct headmodel?
Can you post your matlab code?


On Tue, Sep 1, 2015 at 11:20 PM, Wu, Jia <jia.wu at yale.edu> wrote:

> Hi,
> Here is the most problematic part of my analysis.
> When I did not align electrode positions with headmodel, I was able to get
> interpolated source signal that resembled a brain.
> http://imgur.com/bZkGqsk
> However if I managed to align electrode positions with headmodel, (then
> build the correct leadfield), the interpolated source did not resemble a
> brain.
> http://imgur.com/XQMyiQy
> Anybody has a clue what was going on?
> best,
> -jia
> ------------------------------
> *From:* fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl]
> on behalf of Wu, Jia [jia.wu at yale.edu]
> *Sent:* Monday, August 31, 2015 4:33 PM
> *To:* FieldTrip discussion list
> *Subject:* [FieldTrip] beamformer on EEG data
> Hi,
> I'm new to the community and fieldtrip. I'm trying to use beamformer to do
> oscillatory source localization on some EEG data.
> I thought I stumbled upon some tutorial specific on this top on the
> fieldtrip wiki, but I couldn't find it any more. Most source localization
> materials seem to be for MEG data. And I've been confused about the steps
> to build a correct headmodel, sourcemodel, leadfield based on only EEG
> information.
> Anybody has a quick link to the tutorial? If such tutorial doesn't exist I
> will email the group about my specific questions.
> best,
> -jia
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> fieldtrip at donders.ru.nl
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