From the Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine, Baltimore, Maryland (MAF, KD, AL, RTR, STW, PR, PC); and Kennedy Krieger Institute, Center for Movement Studies, Baltimore, Maryland (RTR, PC).

All correspondence should be addressed to: Pablo Celnik, MD, 600 N Wolfe Street, Baltimore, MD 21287.

This work was funded by the Sheikh Khalifa Stroke Institute and the National Institutes of Health (grant number 1F32HD108835-01).

Margaret A. French is in training.

Financial disclosure statements have been obtained, and no conflicts of interest have been reported by the authors or by any individuals in control of the content of this article.