1. Department of Neurophysics, University of Marburg, Marburg, Germany
2. Center for Mind, Brain and Behavior (CMBB), University of Marburg and Justus-Liebig-University Giessen, Marburg, Germany
3. Thomas RECORDING GmbH, Giessen, Germany
4. stefan.dowiasch@physik.uni-marburg.de
5. Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ, USA
6. frank.bremmer@physik.uni-marburg.de