Cross-trial priming of element positions in visual pop-out search is dependent on stimulus arrangement.

J Exp Psychol Hum Percept Perform

Department Psychologie, Lehrstuhl fur Allgemeine und Experimentelle Psychologie, Ludwig-Maximilians-Universitat Munchen, Munchen, Germany.

Published: August 2007

AI Article Synopsis

  • Two experiments explored how previous target locations influence reaction times in visual search tasks.
  • Reaction times improved when targets appeared in prior target locations but slowed down if they appeared in spots where distractions were previously located; the slowdown (inhibition) took longer to develop.
  • Changing the spatial arrangement of elements during the trials reduced the benefits of prior targets and eliminated the slowdowns, suggesting that the configuration of visual displays is crucial for how we remember and respond to target locations across trials.

Article Abstract

Two experiments examined cross-trial positional priming (V. Maljkovic & K. Nakayama, 1994, 1996, 2000) in visual pop-out search. Experiment 1 used regularly arranged target and distractor displays, as in previous studies. Reaction times were expedited when the target appeared at a previous target location (facilitation relative to neutral baseline) and slowed when the target appeared at a previous distractor location (inhibition). In contrast to facilitation, inhibition emerged only after extended practice. Experiment 2 revealed reduced facilitatory and no inhibitory priming when the elements' spatial arrangement was made irregular, indicating that positional--in particular, inhibitory--priming critically depends on the configuration of the display elements across sequences of trials. These results are discussed with respect to the role of the context for cross-trial priming in visual pop-out search.

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Source
http://dx.doi.org/10.1037/0096-1523.33.4.788DOI Listing

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