Re: perecption of durational variability

[Bruno Repp <repp@xxxxxxxxxxxxxxxx>]

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

> 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
300 George Street
New Haven, CT 06511-6624
Tel. (203) 865-6163, ext. 236
Fax (203) 865-8963
http://www.haskins.yale.edu/staff/repp.html