1. Institute of Bioelectronics (PGI‐8/ICS‐8)Forschungszentrum Jülich 52425 Jülich Germany
2. NeuroelectronicsMunich Schnool of BioengineeringDepartment of Electrical and Computer EngineeringTechnical University of Munich (TUM) & BCCN Munich Boltzmannstr. 11 85748 Garching Germany