Abstract
The authors measured electroencephalograms (EEGs) from subjects on recalling ten types of images presented on CRT. Each presented image consisted of ten types of line drawings of body part, tetrapod, home appliance, and fruits. The canonical discriminant analysis was applied to these single trial EEGs. Four channels of EEGs at the right frontal and the temporal area were used in discrimination. They were Fp2, F4, C4 and F8 according to the international 10-20 system. Sampling EEGs were taken from 400ms to 900ms at 25ms intervals. Also, data were resampled -1ms and -2ms backward. The number of variates is twenty one by four; so the data were eighty four dimensional vectors and number of the data was three hundred and sixty. Results of the canonical discriminant analysis by use of so called jack knife statistical method were almost 80 % in case of ten types. These results were improved from our precedent research.
