[1] Osaka Univ, Grad Sch Med, Dept Neurotherapeut, Suita, Osaka, Japan
[2] Natl Cent Neurol & Psychiat, Natl Inst Neurosci, Dept Degenerat Neurol Dis, Kodaira, Tokyo, Japan
[3] Tokyo Med & Dent Univ, Grad Sch Med & Dent Sci, Dept Neurol & Neurol Sci, Tokyo, Japan
[4] Mayo Clin, Dept Neurosci, Rochester, MN USA
[5] Niigata Univ, Brain Res Inst, Dept Neurol, Clin Neurosci Branch, Niigata, Japan