Abstract
The relation of the durations of on-time (numeral presentation period) and off-time (interval between presentations) to the accuracy of quantitative readings in digital presentation was investigated. A micro-computer (Pang-Facom L-kit 16) was used for presenting numerals. Four kinds of numerals were presented successively and three subjects reported their readings after presentation was over. By changing on-time and off-time systematically, threshold duration for correct readings of four numerals was obtained. It was found that shorter off-time resulted misreadings even if the total duration of on-time and off-time was equal, and that the threshold decreased when off-time was longer. These facts suggest that off-time may play an imortant role in the visual information processing.
