1. From the Departments of Neurosurgery (T.B.M., D.L.H., M.A.M.), Biomedical Engineering (T.B.M.), Cell Biology, Neurobiology and Anatomy (T.B.M.), Biophysics (B.D.G.), and Neurology (M.A.M.), Medical College of Wisconsin, Milwaukee; National Institute of Nursing Research (J.M.G.), NIH, Bethesda; Johns Hopkins School of Nursing and Medicine (J.M.G.), Baltimore, MD; Department of Physical Medicine and Rehabilitation (P.P.), Uniformed Services University of the Health Sciences, Bethesda, MD; Michigan...