BEM model error

Bugs
, ,
1

I am getting the error copied below when trying to compute the 3-layer BEM model for scalp EEG and MEG data (on cortex).
Can you please help us solve this problem? (I get same error using either Windows or Ubuntu)

Error: OpenMEEG call: om_assemble -HM
** "C:\Users\BCH.brainstorm\tmp\openmeeg.geom"
** "C:\Users\BCH.brainstorm\tmp\openmeeg.cond"
** "C:\Users\BCH.brainstorm\tmp\openmeeg_hm.mat"
** OpenMEEG error #1:
** om_assemble version 2.4.9999 compiled at Mar 29 2019 15:22:48 using OpenMP
** Executing using 4 threads.
**
** | ------ om_assemble
** | -HM
** | C:\Users\BCH.brainstorm\tmp\openmeeg.geom
** | C:\Users\BCH.brainstorm\tmp\openmeeg.cond
** | C:\Users\BCH.brainstorm\tmp\openmeeg_hm.mat
** | -----------------------
** (DEPRECATED) Please consider updating your geometry file to the new format 1.1 (see data/README.rst): C:\Users\BCH.brainstorm\tmp\openmeeg.geom
** -4.00002PI
** -4.00002PI
** Interface "3" is not closed !
** Please correct a mesh orientation when defining the interface in the geometry file.

THANKS!

2

Hello

How did you generate these surfaces?
The error message "Interface "3" is not closed !" you get is maybe the cause of this error.

Can you please post a screen capture showing the various BEM layers and the cortical surface?
Something like this:
image

Thanks
Francois

3

Thanks Francois for the fast reply!
I deleted the bem surfaces that were in the patient's anatomy (they had been computed in the past for some other previous analysis) and now it works.
Thanks for your help!