Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), Göttingen, Germany, Bernstein Center for Computational Neuroscience (BCCN), Göttingen, Germany, Institute for Nonlinear Dynamics, Fakultät für Physik, Georg-August Universität Göttingen, Göttingen Germany.|Department for Neuroinformatics, Donders Institute, Radboud University, Nijmegen, Netherlands.|Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), Göttingen, Germany, Bernstein Center for Computational Neuroscience (BCCN), Göttingen, Germany, Institute for Nonlinear Dynamics, Fakultät für Physik, Georg-August Universität Göttingen, Göttingen Germany.