Abstract
This paper described the characteristic whether being possible to distinguish if there was how much presentation time difference in vibration giving that two stimulation time is different because of the condition of fixing the stimulation frequency and 2 stimulation by ERP that was a physiological index. The somato-sensory distinction paradigm of the vibration stimulation to the stimulation time was designed this time and ERP was measured. It was shown that the stimulation frequency was related to the acknowledgment characteristic of time concerning the distinction of the stimulation presentation time from the quantitative evaluation that used an objective physiology index by a psychology physical index and ERP by the response button pressing reaction problem. And, it has been understood that actual experiment condition under f= 120Hz is sensitive in the distinction of the presentation time. Moreover, if the difference at time to present τmt-τta=150ms or more was given when stimulating with f=120Hz, it mistook and the difference was able to be recognized by less than 10%.
