1. Neurocybernetics and Rehabilitation , Department of Neurology, , Magdeburg , Germany
2. Otto von Guericke University , Department of Neurology, , Magdeburg , Germany
3. Department of Behavioral Neurology, Leibniz Institute for Neurobiology , Magdeburg , Germany
4. Biomedical Sciences and Biomedical Engineering Division, School of Biological Sciences, University of Reading , Reading , United Kingdom
5. Center for Behavioral Brain Sciences, Otto von Guericke University , Magdeburg , Germany