1. Center of Bionics and Pain Research , Länsmansgatan 28, 431 30 Mölndal , Sweden
2. Department of Electrical Engineering, Chalmers University of Technology , Chalmersplatsen 5, 42196 , Gothenburg , Sweden
3. Bionics Institute , 384-388 Albert St , East Melbourne, VIC 3002 , Australia
4. Medical Bionics Department, University of Melbourne , Parkville VIC 3052 , Australia