Neuroinformatics, University of Ulm, 89069 Ulm, Germany. hans.kestler@medizin.uni-ulm.de|Neuroinformatics, University of Ulm, 89069 Ulm, Germany. hans.kestler@medizin.uni-ulm.de|Neuroinformatics, University of Ulm, 89069 Ulm, Germany. hans.kestler@medizin.uni-ulm.de|Neuroinformatics, University of Ulm, 89069 Ulm, Germany. hans.kestler@medizin.uni-ulm.de