Dear SPM users,
I am trying to solve the EEG inverse problem by using the leadfield matrix obtained by using the SPM toolbox. Even in case of a simple simulated data which consists of a randomly generated sparse vector of unknowns, EEG leadfield matrix and l1-norm loss function; I cannot obtain a successful reconstruction. I couldn't figure out why the leadfield matrix results in such inaccurate solutions. Could it be related to the spark, nullity or any other property of the matrix? The leadfield matrix and the sample script that I used can be downloaded from
https://dl.dropbox.com/u/19664203/simulated_problem.7z
I'd appreciate if you could help me to understand the reasons behind this. Thank you for your time.
Best,
Ozge
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