[Mne_analysis] Inverse solution with only EEG data

Sheraz Khan sheraz at nmr.mgh.harvard.edu
Sun Nov 23 09:50:37 EST 2014
Search archives:

Hi Lakshmi,

EEG is much more effected by modelling error than MEG, using standard
electrode position, standard head shape and standard MRI will result in
gross errors in cortical localization, which might make the interpretation
of the results diffcult.

Sheraz
On Nov 23, 2014 8:39 AM, "Lakshmi Krishnan" <lakshmik at umd.edu> wrote:

> Hi Christian,
> I don't have measurements of head shape or electrode position.So with the
> canonical electrode positions what would be my first step?Which tool should
> I use to compute the bem model with 3 layers?
> Thanks!
> -Lakshmi
> ________________________________________
> From: mne_analysis-bounces at nmr.mgh.harvard.edu [
> mne_analysis-bounces at nmr.mgh.harvard.edu] on behalf of Christian Brodbeck
> [christianbrodbeck at nyu.edu]
> Sent: Saturday, November 22, 2014 10:48 AM
> To: Alexandre Gramfort
> Cc: Discussion and support forum for the users of MNE Software
> Subject: Re: [Mne_analysis] Inverse solution with only EEG data
>
> So then I think for using the fsaverage brain with EEG you would need to
> create a new bem model with 3 layers, because fsaverage-inner_skull-bem.fif
> that comes with mne only has one layer.
>
> Also, Lakshmi, do you have any kind of measurement of the spatial
> properties of the subjects’ head shapes? In order to scale the fsaverage
> brain for a more realistic head model you would need head shape and/or
> electrode position measurements. Without any measurements I assume the best
> you can do is just use the unscaled fsaverage brain(?) in which case we
> would need canonical electrode positions for fsaverage...
> _______________________________________________
> Mne_analysis mailing list
> Mne_analysis at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
>
>
> The information in this e-mail is intended only for the person to whom it
> is
> addressed. If you believe this e-mail was sent to you in error and the
> e-mail
> contains patient information, please contact the Partners Compliance
> HelpLine at
> http://www.partners.org/complianceline . If the e-mail was sent to you in
> error
> but does not contain patient information, please contact the sender and
> properly
> dispose of the e-mail.
>
> _______________________________________________
> Mne_analysis mailing list
> Mne_analysis at nmr.mgh.harvard.edu
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20141123/a96538d1/attachment.html 


More information about the Mne_analysis mailing list