Abstract
The author is one of the first researchers on averaged evoked potentials (AEP) and event related potentials (ERP) in Japanese psychological field. He aimed to apply AEP and ERP in industrial settings. There were many technical problems to measure EEG, AEP and ERP at practical fields. The author and colleagues developed new technologies to measure those brain potentials at everyday life. The author found a brain potentials called “eye fixation related potential; EFRP”. EFRP is associated with offset of saccadic eye movements; i.e. onset of eye fixation. EFRP is applicable as an index of attention at eye moving situations. The author reviewed research and development of detection of AEP, ERP and EFRP, and findings on those potentials in his laboratories for about 45 years.