1. III. Institute of Physics-Biophysics, Georg August University, Göttingen 37077, Germany
2. Department of Biotechnology and Biophysics, Biocenter, University of Würzburg, Am Hubland, Würzburg 97074, Germany
3. Cluster of Excellence “Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells” (MBExC), Georg August University, Göttingen 37077, Germany