1. Department of Physical Therapy, University of Florida, Gainesville, Florida.
2. Department of Physiology and Functional Genomic, University of Florida, Gainesville, Florida.
3. Department of Physiological Sciences, University of Florida, Gainesville, Florida.
4. North Florida/ South Georgia Veterans Heath System, Brain Rehabilitation Research Center of Excellence, Gainesville, Florida.
5. Department of Neurology, University of Florida, Gainesville, Florida.
6. Section of Integrative Biology, University of Texas, Austin, Texas.
7. Department of Neuroscience, University of Florida, Gainesville, Florida.