# Changing EEG electrodes coordinates

**URL:** <https://mne.discourse.group/t/changing-eeg-electrodes-coordinates/232>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [June 22, 2010, 3:31pm UTC](https://mne.discourse.group/t/changing-eeg-electrodes-coordinates/232 "2010-06-22T15:31:31Z")\
**Posts on this page:** 3\
**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:** [June 22, 2010, 3:31pm UTC](https://mne.discourse.group/t/changing-eeg-electrodes-coordinates/232/1 "2010-06-22T15:31:31Z")

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Hello MNE users,

Has anyone changed the EEG electrodes locations in MNE (analyze or  
browse\_raw)? I found that two of my EEG electrodes are way off when I plot  
them in matlab and wanted to know how I can solve this since the forward  
model is affected by the electrode's locations.

I can make the changes in matlab when loading the files using the mne  
toolbox but I want is to have the mne raw files with the correct  
coordinates since all the other files will use them.

Any help is extremely appreciated!!

Thanks,

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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:** [July 6, 2010, 1:53pm UTC](https://mne.discourse.group/t/changing-eeg-electrodes-coordinates/232/2 "2010-07-06T13:53:52Z")

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Hey Andres,

I don't know if anyone ever replied to this. Basically, the viewer in  
mne\_analyze uses a predescribed file, which you can generate (simply  
look for "Creating a custom EEG layout" in the manual). I would be  
very wary of putting in your own locations by hand (which you would  
want to do in the matlab toolbox by editing the data in matlab and  
writing back the raw files), unless you are quite sure about their  
locations.

Good Luck!  
D

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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:** [November 9, 2010, 4:59pm UTC](https://mne.discourse.group/t/changing-eeg-electrodes-coordinates/232/3 "2010-11-09T16:59:00Z")

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Dear MNE users,

I would like to convert a 3D STC structure to a 2D matrix in Matlab which represents the flattened brain. It doesn't matter too much if I lose some areas of the brain, e.g. the medial wall, or the 2D map is slightly distorted. Apparently, MNE can visualise this, but it is not clear to me if I can export the 2D map to Matlab.

Many thanks for your help,

Li Su