Abstract
The authors have recorded EEGs from subjects in viewing four types of arrows presented on the CRT. Each of four symbols have direction of upward, downward, leftward and rightward, respectively. Subjects were asked to make read them silently. The equivalent current dipole source localization (ECDL) method had been applied to these ERPs. With arrow symbols, ECDs had been localized to areas related to the shape recognition. Taking account of these facts, the authors investigated a single trial EEGs of the subject precisely and determined effective sampling latencies for the discriminant analysis to four types of arrow. The number of the variates is twenty one by three channels, therefore the sum is sixty three variates. Results of the discriminant analysis for four type objective variates were mostly more than 80 %. 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.
