[FieldTrip] Mesh intersecting BEM headmodel

[Mariani Olivia]

Hello,

I am using the "create a BEM headmodel" script but I am getting spikes and unwanted holes in the brain compartment when using the triplot function and don't know how to get rid of it.

I get the following warnings on matlab (R2011a):

%%%%%%%%%%%%%%%%%%%%%
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!! WARNING !!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Mesh is self intersecting !
Mesh Info :
    # points : 1000
    # triangles : 1996
    Euler characteristic : 2
    Min Area : 14
    Max Area : 152.381
Self intersection for mesh number 2
%%%%%%%%%%%%%%%%%%%%%%

I get this self intersecting warning for my three meshes and additional warnings that two meshes are intersecting.
My problem may come from ill-defined boundaries. Would you know how to better define the boundaries between the meshes?

And then I get the following error:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
| ------ om_minverser
| ./tpa072e3c1_0eb4_4007_ba7c_1f49bd581138.bin
| ./tpaf0e1a3b_e107_4728_bbb8_1f5309bb3861.bin
| -----------------------
Exception: Unable to open the file ./tpa072e3c1_0eb4_4007_ba7c_1f49bd581138.bin for reading Doing my best....
Warning: an error ocurred while running OpenMEEG
> In openmeeg at 127
  In ft_prepare_bemmodel at 232
  In projet_mineur at 106
Error using ==> fread
Invalid file identifier.  Use fopen to generate a valid file identifier.
Warning: File 'tpa072e3c1_0eb4_4007_ba7c_1f49bd581138.bin' not found.
> In openmeeg>cleaner at 142
  In openmeeg at 129
  In ft_prepare_bemmodel at 232
  In projet_mineur at 106
Warning: File 'tpaf0e1a3b_e107_4728_bbb8_1f5309bb3861.bin' not found.
> In openmeeg>cleaner at 143
  In openmeeg at 129
  In ft_prepare_bemmodel at 232
  In projet_mineur at 106
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

The file om_minverser from openmeeg closes and the figures open.

Thank you,

Olivia


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.science.ru.nl/pipermail/fieldtrip/attachments/20120313/d290f7f1/attachment-0001.html>