# mne\_watershed\_bem

**URL:** <https://mne.discourse.group/t/mne-watershed-bem/174>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [October 20, 2009, 1:08pm UTC](https://mne.discourse.group/t/mne-watershed-bem/174 "2009-10-20T13:08:56Z")\
**Posts on this page:** 1\
**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:** [October 20, 2009, 1:08pm UTC](https://mne.discourse.group/t/mne-watershed-bem/174/1 "2009-10-20T13:08:56Z")

</div>

Hi,

In order to get the three BEMs for EEG 3D source reconstruction  
for subject X, I used mne\_watershed\_bem with --atlas option, which  
created the BEMs in X/bem/watershed/, but the surfaces created were  
distorted.

I checked the tutorial on troubleshooting the surfaces, but that does  
not address fixing these BEMs, so I was wondering if anybody knows how  
to get around this problem.

Regards,  
Ahmed