[Mne_analysis] Correcting EEG electrode's locations on mne_analyze

Matti Hamalainen msh at nmr.mgh.harvard.edu
Tue Apr 20 14:40:04 EDT 2010
Search archives:

Hi Andres,

On Apr 20, 2010, at 2:35 PM, Andres Felipe Salazar Gomez wrote:

> Hi MNE users,
>
> I am trying to visualize the real locations for EEG electrodes on
> mne_analyze using the viewer.  I can see the electrodes on the scalp
> surface but not the real distance of each electrode to it. I am  
> trying to
> check that my electrodes were correctly digitized and wanted to know  
> if
> there is a way to correct their locations in case such a problem  
> occurs.

When you do the coordinate system alignment, the electrode locations  
are also shown but not with a different color, unfortunately.
For the forward calculation, the electrodes are dropped to the nearest  
point on the scalp surface so that slight error in the digitization  
should not be a big problem, especially because the EEG patterns are  
quite widespread.

- Matti




---------

Matti Hamalainen, Ph.D.
Athinoula A. Martinos Center for Biomedical Imaging
Massachusetts General Hospital

msh at nmr.mgh.harvard.edu






-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20100420/096af305/attachment.html 


More information about the Mne_analysis mailing list