1. Department of Anatomy and Neurobiology, Boston University School of Medicine, Boston, Massachusetts, USA
2. Early Clinical Development, Pfizer Inc., Cambridge, Massachusetts, USA
3. Department of Neurology, Boston University School of Medicine, Boston, Massachusetts, USA
4. Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, Massachusetts, USA
5. Center for Systems Neuroscience, Boston University, Boston, Massachusetts, USA