DOES FILLED DURATION ILLUSION TAKE PLACE FOR VERY SHORT TIME INTERVALS?

  • Emi Hasuo
  • Yoshitaka Nakajima
  • Kazuo Ueda

Abstract

Subjective durations of filled time intervals (marked by the onset and offset of a sound) and empty time intervals (marked by onsets of two successive brief sounds) of 20-360 ms were measured, utilizing the method of adjustment. Whereas many previous studies employing longer intervals had reported that filled time intervals had been perceived as longer than empty time intervals of the same physical duration (filled duration illusion), the present results showed that this illusion occurred only for less than a half of the participants, and that, for the other participants, filled time intervals were perceived as shorter than empty time intervals.

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