Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings

Observers were trained to search for a particular horizontal string of 3 capital letters presented among similar strings consisting of exactly the same letters in different orders. The training was followed by a test in which the observers searched for a new target that was identical to one of the f...

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Main Authors: Søren eKyllingsbæk, Sven eVan Lommel, Thomas Alrik Sørensen, Claus eBundesen
Format: Article
Language:English
Published: Frontiers Media S.A. 2014-11-01
Series:Frontiers in Psychology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01383/full
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author Søren eKyllingsbæk
Sven eVan Lommel
Thomas Alrik Sørensen
Claus eBundesen
author_facet Søren eKyllingsbæk
Sven eVan Lommel
Thomas Alrik Sørensen
Claus eBundesen
author_sort Søren eKyllingsbæk
collection DOAJ
description Observers were trained to search for a particular horizontal string of 3 capital letters presented among similar strings consisting of exactly the same letters in different orders. The training was followed by a test in which the observers searched for a new target that was identical to one of the former distractors. The new distractor set consisted of the remaining former distractors plus the former target. On each trial, three letter-strings were displayed, which included the target string with a probability of .5. In Experiment 1, the strings were centered at different locations on the circumference of an imaginary circle around the fixation point. The training phase of Experiment 2 was similar, but in the test phase of the experiment, the strings were located in a vertical array centered on fixation, and in target-present arrays, the target always appeared at fixation. In both experiments, performance (d’) degraded on trials in which former targets were present, suggesting that the former targets automatically drew processing resources away from the current targets. Apparently, the two experiments showed automatic attraction of visual attention by supraletter features of former target strings.
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spelling doaj.art-b05eff4853dc4098882441202370bb852022-12-22T03:34:27ZengFrontiers Media S.A.Frontiers in Psychology1664-10782014-11-01510.3389/fpsyg.2014.01383113269Automatic Attraction of Visual Attention by Supraletter Features of Former Target StringsSøren eKyllingsbæk0Sven eVan Lommel1Thomas Alrik Sørensen2Claus eBundesen3University of CopenhagenKU Leuven - University of LeuvenAalborg UniversityUniversity of CopenhagenObservers were trained to search for a particular horizontal string of 3 capital letters presented among similar strings consisting of exactly the same letters in different orders. The training was followed by a test in which the observers searched for a new target that was identical to one of the former distractors. The new distractor set consisted of the remaining former distractors plus the former target. On each trial, three letter-strings were displayed, which included the target string with a probability of .5. In Experiment 1, the strings were centered at different locations on the circumference of an imaginary circle around the fixation point. The training phase of Experiment 2 was similar, but in the test phase of the experiment, the strings were located in a vertical array centered on fixation, and in target-present arrays, the target always appeared at fixation. In both experiments, performance (d’) degraded on trials in which former targets were present, suggesting that the former targets automatically drew processing resources away from the current targets. Apparently, the two experiments showed automatic attraction of visual attention by supraletter features of former target strings.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01383/fullAttentionVisual Perceptionvisual searchCaptureletters
spellingShingle Søren eKyllingsbæk
Sven eVan Lommel
Thomas Alrik Sørensen
Claus eBundesen
Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
Frontiers in Psychology
Attention
Visual Perception
visual search
Capture
letters
title Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
title_full Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
title_fullStr Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
title_full_unstemmed Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
title_short Automatic Attraction of Visual Attention by Supraletter Features of Former Target Strings
title_sort automatic attraction of visual attention by supraletter features of former target strings
topic Attention
Visual Perception
visual search
Capture
letters
url http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01383/full
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AT svenevanlommel automaticattractionofvisualattentionbysupraletterfeaturesofformertargetstrings
AT thomasalriksørensen automaticattractionofvisualattentionbysupraletterfeaturesofformertargetstrings
AT clausebundesen automaticattractionofvisualattentionbysupraletterfeaturesofformertargetstrings