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| Research article summary (published 24 Feb 2003): |
Voluntary action expands perceived duration of its sensory consequence.
Full Abstract
When we look at a clock with a hand showing seconds, the hand sometimes appears to stay longer at its first-seen position than at the following positions, evoking an illusion of chronostasis. This illusory extension of perceived duration has been shown to be coupled to saccadic eye movement and it has been suggested to serve as a mechanism of maintaining spatial stability across the saccade. Here, we examined the effects of three kinds of voluntary movements on the illusion of chronostasis:
key press, voice command, and saccadic eye movement. We found that the illusion can occur with all three kinds of voluntary movements if such movements start the clock immediately. When a delay is introduced between the voluntary movement and the start of the clock, the delay itself is overestimated. These results indicate that the illusion of chronostasis is not specific to saccadic eye movement, and may therefore involve a more general mechanism of how voluntary action influences time perception.
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Author information
Author/s: Park, Junghyun (J); Schlag-Rey, Madeleine (M); Schlag, John (J);
Affiliation: Department of Neurobiology, UCLA School of Medicine, Los Angeles, CA 90095-1763, USA. jhpark@ucla.edu
Grants: EY-05879 (Agency:United States NEI)
Journal and publication information
Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale (Exp Brain Res), published in Germany. (Language: eng)
Reference: 2003-Apr; vol 149 (issue 4) : pp 527-9
Dates: Created 2003/04/04; Completed 2003/07/07; Revised 2008/02/15;
PMID: 12677334, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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