1. Rehab Neural Engineering Labs, University of Pittsburgh, Pittsburgh, PA, USA.
2. Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA.
3. Center for the Neural Basis of Cognition, Pittsburgh, PA, USA.
4. Department of Organismal Biology, University of Chicago, Chicago, IL, USA.
5. Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA, USA.
6. Department of Neurosurgery, University of Texas at Austin, Austin, TX, USA.
7. McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
8. VA Center of Excellence, Department of Veterans Affairs, Pittsburgh, PA, USA.