1. Department of Biophysics Radboud University, Donders Institute for Brain, Cognition and Behaviour Nijmegen The Netherlands
2. Department of Neurology and Clinical Neurophysiology Medical Spectrum Twente Enschede The Netherlands
3. Clinical Neurophysiology group University of Twente Enschede The Netherlands
4. Department of Biomedical Signals and Systems University of Twente Enschede The Netherlands
5. Department of Rehabilitation; Centre of Expertise for Parkinson & Movement Disorders Radboud University Medical Centre; Donders Institute for Brain, Cognition and Behaviour Nijmegen The Netherlands
6. Department of Rehabilitation Sint Maartenskliniek Nijmegen The Netherlands