1. Rehab Neural Engineering Labs, Department of Bioengineering, Pittsburgh, PA, USA
2. Department of Physical Medicine and Rehabilitation, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
3. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
4. Center for the Neural Basis of Cognition, Department of Neuroscience, University of Pittsburgh, Pittsburgh, PA, USA
5. Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL, USA
6. Department of Veterans Affairs, Human Engineering Research Laboratories, Va Center of Excellence, Pittsburgh, Pa, USA