[FieldTrip] matrix is close to singular when running ft_scalpcurrentdensity

Valeria Jaramillo v.jaramillo at surrey.ac.uk
Tue Aug 30 10:48:52 CEST 2022


I tried to run ft_scalpcurrentdensity on my 128-channel EEG data (Cz recording reference) to estimate scalp current density using the surface Laplacian. When I ran it, I received this warning message:

Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 3.554116e-08.

Do you have any idea why I get this message and should I be concerned about it?

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