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Re: perecption of durational variability

Hi Pierre:

Were those data obtained in rhythmic contexts? What is your take on the data summarized by Friberg and Sundberg (1995)? They clearly show a discontinuity at 200-300 ms.


Bruno and Volker,,

Actually, Weber's law holds pretty well for durations down to about 20 ms. For filled and/or unfilled intervals, this has been shown by Chistovich (1959), Creelman (1962), Abel (1972), and Divenyi & Danner (1977), among others. However, it is true that for narrow-band time markers the Weber fraction increases at intervals shorter than about 100 ms.

Pierre Divenyi

Bruno H. Repp
Haskins Laboratories
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