Distorting the apparent duration of visual events

Johnston, A., Watanabe, J., Bruno, A., Arnold, D. H. and Nishida, S. (2006). Distorting the apparent duration of visual events. In: Gregory, R. L., Perception. 29th European Conference on Visual Perception, St Petersburg, Russia, (1-2). 20-25 August, 2006.

Author Johnston, A.
Watanabe, J.
Bruno, A.
Arnold, D. H.
Nishida, S.
Title of paper Distorting the apparent duration of visual events
Conference name 29th European Conference on Visual Perception
Conference location St Petersburg, Russia
Conference dates 20-25 August, 2006
Proceedings title Perception   Check publisher's open access policy
Journal name Perception   Check publisher's open access policy
Place of Publication London, United Kingdom
Publisher Sage Publications
Publication Year 2006
Sub-type Published abstract
Open Access Status Not Open Access
ISSN 0301-0066
Editor Gregory, R. L.
Volume 35
Issue Supplement
Start page 1
End page 2
Total pages 2
Collection year 2006
Language eng
Abstract/Summary The perceived duration of a 500 ms sinusoidally modulated (10 Hz) Gaussian luminance blob is reduced by around 20% after adaptation to a higher (20 Hz) temporal frequency but is hardly affected by adaptation to a lower (5 Hz) temporal frequency (Johnston et al, 2006 Current Biology 16 472 - 479). This apparent temporal compression is not the result of differential delays of the perceived time of onset or offset of the pattern, which were independently measured by comparing the time of onset and offset against an auditory noise burst. Therefore adaptation does not act to modify the sensory signal. The temporal effect is not mediated by concomitant changes in apparent temporal frequency as adaptation to higher and lower temporal frequencies results in an apparent repulsion of test frequency whereas only adaptation to high temporal frequency reduces apparent duration. Adaptation to a very high temporal frequency (50 Hz), at or above the critical flicker fusion threshold, also leads to a reduction in the perceived duration for a 10 Hz test stimulus, implicating the magnocellular system in time compression.
Keyword visual event
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: School of Psychology Publications
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