1. From the BIO5 Institute (J.B.H., M.F.H.), University of Arizona, Tucson; CombinedBrain (K.H.), Brentwood; DenGen Consulting (D.M.J.S.), Rocky Top, TN; Children's National Medical Center (J.M.S.), Department of Neurology, Washington, DC; Department of Mathematics (J.C.W.), University of Arizona; and Neurology Department (M.F.H.), University of Arizona, Tucson.