[Mne_analysis] Intersecting MNE BEM meshes

[dgw]

Hi Octavian,

There are several things to consider about this

Do you have any EEG data?

If NO

Just use a single layer BEM (This is supported by the literature).

If you do have EEG data,

First I would say you need to try to get better MR data FreeSurfer has
pages on their wiki about this. Also, I highly recommend using the
multi-echo flash sequences as these dramatically improve the BEM (I
would argue they are necessary, but I imagine many others would
disagree).

If it is too late for that, you can try to generate them by utilizing
the -less and -more options described on the FreeSurfer wiki for
mri_watershed (the mne_watershed_bem script can help you find a good
place to start). vary the names of the output files and use the best
ones you can get. This is slow and difficult, but could work.

D

On Thu, Nov 29, 2012 at 5:08 PM, octavian lie <octavian.lie at gmail.com> wrote:
> Dear All,
>
> I would like to compute nonintersecting  decimated (~<=5000 triangles)
> MNE BEM meshes, however using MNE on several patients with the default
> mne_watershed seems to lead to intersecting surfaces. Is there a
> workaround this ?
> Thank you,
>
> Octavian.
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