1. From the Hotchkiss Brain Institute (J.A.S., T.M.H., S.P.D.), and Department of Clinical Neurosciences (J.A.S., T.M.H., S.P.D.), University of Calgary, Alberta, Canada; Centre for Neuroscience Studies (T.M.H., S.H.S.), Department of Anatomy and Cell Biology (S.H.S.), and School of Medicine (S.H.S.), Queen’s University, Kingston, Ontario, Canada; and Department of Exercise Science, University of South Carolina, Columbia (T.M.H.).