^○Tomomi Shijo¹, Ryoukichi Ikeda², Naoki Suzuki¹, Jun Ohta², Jun Suzuki², Ai Hirano², Kengo Kato², Kensuke Ikeda¹, Rumiko Izumi¹, Shio Mitsuzawa³, Hitoshi Warita¹, Masaaki Kato³, Masashi Aoki¹, Yukio Katori² (1.Department of Neurology, Tohoku University Graduate School of Medicine, Japan, 2.Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 3.Department of Neurology, Shodo-kai Southern Tohoku General Hospital)

^○Haruhisa Kato, Tomoko Saito, Makiko Naito, Shin Kwak, Hitoshi Aizawa (Department of Neurology, Tokyo Medical University Hospital, Japan)

^○Yu-ichi Noto¹, Takamasa Kitaoji¹, Kohei Watanabe², Toshiki Mizuno¹ (1.Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan, 2.School of Health and Sport Sciences, Chukyo University)

^○Mana Higashihara¹, Hiroki Yamazaki², Yuishin Izumi², Chizuko Oishi³, Takashi Chiba⁴, Hiroyuki Nodera^2,5, Shigeo Murayama¹, Ryuji Kaji^2,6, Masahiro Sonoo⁴ (1.Department of Neurology, Tokyo Metropolitan Geriatric Hospital, Japan, 2.Department of Neurology, Tokushima University, 3.Department of Neurology, Kyorin University, 4.Department of Neurology, Teikyo University, 5.Department of Neurology, Tenri Hospital, 6.Department of Neurology, Utano Hospital)