(7) 右上前頭回からの脳波出力を用いたブレイン・マシン・インターフェイスの基礎研究Ⅱ
山ノ井髙洋，森髙篤司，高柳浩，大西真一，山崎敏正，菅野道夫，野中秀俊
北海学園大学大学院工学研究科紀要工学研究, 第9号, pp.21-26, 2009-9
To develop a brain computer interface the authors have investigated the brain activity during human recognition of characters and symbols representing directional meaning. The authors have recorded electroencephalograms (EEGs) from subjects in reading silently four types of arrows presented on CRT. Each of arrows has directions of upward, downward, leftward or rightward. The canonical discriminant analysis is applied to the single trial EEGs. Four channels of EEGs at the right frontal and temporal had been used to discriminate the four types of symbols. They are 4, 6, 12 and 14 channels according to the international 10-20 system. Sampling EEGs were taken from 400ms to 900ms at 25ms intervals. So the numbers of variates are twenty-one by four, i.e. eighty four. Results of the discriminant rates by use of the present system were more greater than 90 %. These results are improved from the precedent our research. By four type code of infrared rays according to the discrimination results from a PC, the authors have controlled a micro robot the e-puck.
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