1. Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL, USA
2. Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, Houston, TX, USA
3. The Neurorehabilitation Research Laboratory, The Institute of Rehabilitation and Research (TIRR)-Memorial Hermann Hospital, Houston, TX, USA
4. Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA
5. Institute of Biomedical Engineering, University of Science and Technology of China, Hefei, China