[FieldTrip] Beamforming oscillatory responses in MEG and EEG data tutorial

[Peter Goodin]

Hi Kaelasha,

Take a look at http://fieldtrip.fcdonders.nl/tutorial/beamformer#exercise_3center_of_head_biashttp://fieldtrip.fcdonders.nl/tutorial/beamformer#exercise_3center_of_head_biashttp://fieldtrip.fcdonders.nl/tutorial/beamformer#exercise_3center_of_head_bias
This should help clarify what's going on.

Peter

__________________________
Peter Goodin,
BSc (Hons), Ph.D Candidate.

Brain and Psychological Sciences Research Centre (BPsych)
Swinburne University,
Hawthorn, Vic, 3122
http://www.swinburne.edu.au/swinburneresearchers/index.php?fuseaction=profile&pid=4149

Monash Alfred Psychiatry Research Centre (MAPrc)
Level 4, 607 St Kilda Road,
Melbourne 3004
________________________________
From: fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl] on behalf of Kaelasha Tyler [ktyler at swin.edu.au]
Sent: Monday, 2 February 2015 12:26 PM
To: fieldtrip at science.ru.nl
Subject: [FieldTrip] Beamforming oscillatory responses in MEG and EEG data tutorial

Hi all,

Just a question:
I was running through the 'Beamforming oscillatory responses in MEG and EEG data' tutorial, and at one plot, the strongest motor response is located in the center of the head.  The tutorial asks "Can you explain this finding?"
Has anyone else done this tutorial?
Because I am not at all sure why a motor response would show up in the centre of the head.
Can anyone enlighten me?

When I have been getting results that look like this, I kept feeling there was an error or some artefact going on.

Kaelasha Tyler

PhD Candidate
Brain and Psychological Sciences Research Centre
Swinburne University of Technology
Melbourne
Australia
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