Micro-robot Control by Use of EEG on Imaging Arrows II

Abstract

The authors have recorded EEGs from subjects 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 form 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 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.