Sensitivity of EEG leads to volume conductor properties.

1 Institute for Biomagnetism and Biosignalanalysis, University of Muenster, 48149, Muenster, Germany 2 Institute of Mathematics and Image Computing, University of Luebeck, 23562 Luebeck, Germany 3 Department of Clinical Radiology, University of Muenster, 48149, Muenster, Germany 4 Institute for Computational and Applied Mathematics, University of Muenster, 48149, Muenster, Germany 5 Max Planck Institute for Human Cognition and Brain Sciences, PO box 500355, 04303 Leipzig, Germany