[Simnibs-discuss] tDCS optimization with --no-cat headmesh

Lena Kuczka lena.marie.kuczka at uni-oldenburg.de
Sun Jun 5 22:30:42 CEST 2022


I am trying to simulate an optimized tDCS montage for a distributed 
target, but have encountered a problem in the last step of the process.

I've manually edited the segmentation masks to include a lesion I 
segmented separately, so I don't use CAT12 for meshing. Unfortunately 
when I know run the simulation with that head mesh, I get this error:

     numpy.linalg.LinAlgError: Singular matrix

This only happens for meshes created with headreco all --no-cat, as far 
as I'm aware. Could that be a problem with the leadfield or am I missing 

Thank you in advance,

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