Reinhard Loidl1,2, Elisabeth Abs3. 1. Department of Information Technology and Electrical Engineering, ETH Zurich, Institute of Neuroinformatics, 8057 Zurich, Switzerland. 2. Doctoral Program, Neuroscience Center Zurich, 8057 Zurich, Switzerland. 3. Department of Information Technology and Electrical Engineering, ETH Zurich, Institute of Neuroinformatics, 8057 Zurich, Switzerland, Eliabs@ethz.ch.