October 2003
Volume 3, Issue 9
Free
Vision Sciences Society Annual Meeting Abstract  |   October 2003
Searching a noisy visual display with preview
Author Affiliations
  • Mark W Becker
    Lewis & Clark College Portland, OR, USA
  • Harold Pashler
    University of California, San Diego, CAUSA
Journal of Vision October 2003, Vol.3, 631. doi:10.1167/3.9.631
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      Mark W Becker, Harold Pashler; Searching a noisy visual display with preview. Journal of Vision 2003;3(9):631. doi: 10.1167/3.9.631.

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

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Abstract

3 experiments investigate whether prior exposure to a scene results in a faster (lower RT) and/or more efficient search (reduction in the slope of the set size function). In Experiment 1, observers performed 6 consecutive searches of the same visual array (set sizes 3, 6, or 12), with a different target presented (orally) for each search. In Experiments 2 and 3, each array was searched once. Prior exposure was manipulated, on some trials, by a 2 s preview. Some of the arrays were also embedded in visual noise. Prior exposure produced faster RTs but did not affect search efficiency. The partial visual quality × preview interaction suggests that prior exposure allowed the storage of a limited number of items. If the target was one of those items, the observer responded without searching; if not, the observer searched the remaining items as if there was no preview. Results are consistent with a view of visual representations as fairly sparse.

Becker, M. W., Pashler, H.(2003). Searching a noisy visual display with preview [Abstract]. Journal of Vision, 3( 9): 631, 631a, http://journalofvision.org/3/9/631/, doi:10.1167/3.9.631. [CrossRef]
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