June 2007
Volume 7, Issue 9
Free
Vision Sciences Society Annual Meeting Abstract  |   June 2007
Testing a multi-resolution clock model for temporal duration discrimination
Author Affiliations
  • Michael Morgan
    City University, London
  • Joshua Solomon
    City University, London
Journal of Vision June 2007, Vol.7, 1011. doi:10.1167/7.9.1011
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      Michael Morgan, Joshua Solomon; Testing a multi-resolution clock model for temporal duration discrimination. Journal of Vision 2007;7(9):1011. doi: 10.1167/7.9.1011.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Duration discrimination thresholds in the seconds range are approximately proportional to the standard duration (Weber's Law). So are those for spatial length discrimination. Why? For space, a multi-resolution ‘rubber ruler’ model has been proposed. We suggest a similar model for time, consisting of a clock that has an adjustable tick rate, but a finite size accumulator. Because of the latter, the tick rate, and thus the resolution, must be approximately proportional to the duration being timed. We predict that observers will be impaired if they do not know at the start of each trial whether they are going to have to time a short (∼1 sec) or a long (∼ 4 sec) interval; and we shall report that this is the case.

Morgan, M. Solomon, J. (2007). Testing a multi-resolution clock model for temporal duration discrimination [Abstract]. Journal of Vision, 7(9):1011, 1011a, http://journalofvision.org/7/9/1011/, doi:10.1167/7.9.1011. [CrossRef]
Footnotes
 Wellcome Trust
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