1. Institute of Physiotherapy, University of Applied Sciences FH-Joanneum, Graz, Austria
2. Otto Loewi Research Center, Physiology Section, Medical University of Graz, Graz, Austria
3. Department of Neurology, Franz Tappeiner Hospital, Merano, Italy
4. Department of Neurology, Christian Doppler Clinic, Paracelsus Medical University, Salzburg, Austria