1. Institute of Physical and Theoretical Chemistry, University of Bonn 1 , Wegelerstr. 12, 53115 Bonn , Germany
2. Institute of Reconstructive Neurobiology, University of Bonn Medical Faculty and University Hospital Bonn 2 , Venusberg-Campus 1, 53127 Bonn , Germany
3. Institute of Experimental Epileptology and Cognition Research (IEECR), University of Bonn Medical School 3 , Sigmund-Freud-Str. 25, 53127 Bonn , Germany
4. LIFE & BRAIN GmbH 4 , Cellomics Unit, Venusberg-Campus 1, D-53127 Bonn , Germany