December 2001
Volume 1, Issue 3
Free
Vision Sciences Society Annual Meeting Abstract  |   December 2001
Serial search is certainly serial
Author Affiliations
  • L. Kontsevich
    Smith-Kettlewell, Eye Research Institute, San Francisco, CA, USA
Journal of Vision December 2001, Vol.1, 113. doi:10.1167/1.3.113
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      L. Kontsevich; Serial search is certainly serial. Journal of Vision 2001;1(3):113. doi: 10.1167/1.3.113.

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

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Abstract

Recently, there appeared a large number of studies showing that the results of serial visual search tasks can be explained by uncertainty effects. This explanation implies that search within a single fixation is always parallel and that there is no focal attention performing internal scanning of the search patterns. The present study re-examines the serial search paradigm with a new technique. Instead of measuring mean reaction time for each condition we assessed a histogram of the reaction times accumulated across thousands of trials. The histogram for positive responses (in which target was found) had a flat top, whose width was proportional to the number of distractors. This shape is consistent with serial self-terminating search within a single fixation and inconsistent with the uncertainty prediction.

Kontsevich, L.(2001). Serial search is certainly serial [Abstract]. Journal of Vision, 1( 3): 113, 113a, http://journalofvision.org/1/3/113/, doi:10.1167/1.3.113. [CrossRef]
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