1. Rehab Neural Engineering Labs, University of Pittsburgh, Pittsburgh, United States
2. Department of Bioengineering, University of Pittsburgh, Pittsburgh, United States
3. Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, United States
4. Department of Neurosurgery, Stanford University, Stanford, United States
5. Department of Electrical Engineering, Stanford University, Stanford, United States
6. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, United States
7. Human Engineering Research Laboratories, VA Center of Excellence, Department of Veterans Affairs, Pittsburgh, United States