[1] Max Planck Inst Biophys Chem, Dept NanoBiophoton, D-37077 Gottingen, Germany
[2] Ctr Nanoscale Microscopy & Mol Physiol Brain, Gottingen, Germany
[3] Univ Munich, Dept Mol Neurobiol, Munich, Germany
[4] Univ Munich, Dept Psychiat, D-80539 Munich, Germany