1. Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty; Heinrich Heine University Düsseldorf; Düsseldorf Germany
2. Donders Institute for Brain, Cognition, and Behavior; Radboud University; Nijmegen the Netherlands
3. Department of Medical Engineering; Ruhr-University Bochum; Bochum Germany
4. Department of Computer and Information Science; University of Konstanz; Konstanz Germany
5. Department of Functional Neurosurgery and Stereotaxy, Medical Faculty; University Hospital Düsseldorf; Düsseldorf Germany
6. Center of Functionally Integrative Neuroscience; Aarhus University; Aarhus Denmark
7. Zukunftskolleg and Department of Psychology; University of Konstanz; Konstanz Germany
8. Center for Movement Disorders and Neuromodulation; University Hospital Düsseldorf; Düsseldorf Germany