*Toshimitsu Takahashi¹, Masahiro Ogino^2,3, Yusuke Uchiyama^1,4, Soichiro Fujiki¹, Kensaku Nomoto¹, Teruyuki Fukushima¹, Toshihiro Kawase^5,1, Hiroyoshi Akutsu², Kenji Kansaku¹ (1. Dept Physiology, Dokkyo Medical University, Tochigi, Japan, 2. Dept Neurosurgery, Dokkyo Medical University, Tochigi, Japan, 3. Japan Red Cross Ashikaga Hospital, Tochigi, Japan, 4. MAZIN Inc, Tokyo, Japan, 5. Sch Engineering, Tokyo Denki University, Tokyo, Japan)