# Correcting EEG electrode's locations on mne\_analyze

**URL:** <https://mne.discourse.group/t/correcting-eeg-electrodes-locations-on-mne-analyze/221>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [April 20, 2010, 6:35pm UTC](https://mne.discourse.group/t/correcting-eeg-electrodes-locations-on-mne-analyze/221 "2010-04-20T18:35:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [April 20, 2010, 6:35pm UTC](https://mne.discourse.group/t/correcting-eeg-electrodes-locations-on-mne-analyze/221/1 "2010-04-20T18:35:47Z")

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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.

Thanks in advance for your comments,

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [April 20, 2010, 6:40pm UTC](https://mne.discourse.group/t/correcting-eeg-electrodes-locations-on-mne-analyze/221/2 "2010-04-20T18:40:04Z")

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Hi Andres,

> 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