[1] Vanderbilt Univ, Med Ctr, Movement Disorders Clin, Nashville, TN USA
[2] Emory Univ, Dept Neurosurg, Atlanta, GA 30322 USA
[3] Emory Univ, Dept Neurol, Atlanta, GA 30322 USA
[4] Emory Univ, Dept Biomed Engn, Atlanta, GA 30322 USA
[5] Georgia Inst Technol, Atlanta, GA 30332 USA