Oculomotor capture by supraliminal and subliminal onset singletons: the role of contrast polarity.

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  • Additional Information
    • Source:
      Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0417402 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-5646 (Electronic) Linking ISSN: 00426989 NLM ISO Abbreviation: Vision Res Subsets: MEDLINE
    • Publication Information:
      Publication: Kidlington, Oxford : Elsevier Science Ltd.
      Original Publication: Oxford [etc.]
    • Subject Terms:
      Subliminal Stimulation*; Attention/*physiology ; Awareness/*physiology ; Contrast Sensitivity/*physiology ; Saccades/*physiology; Adolescent ; Adult ; Analysis of Variance ; Female ; Humans ; Male ; Photic Stimulation/methods ; Young Adult
    • Abstract:
      According to a top-down explanation of subliminal oculomotor capture, only subliminal distractors with a contrast polarity matching that of the searched-for targets should capture attention. For instance, when looking for white targets only subliminal white but not black distractors should capture attention. In contrast, according to a bottom-up explanation of such capture effects, subliminal distractors with a contrast polarity different to that of the searched-for targets should also capture attention. For instance, even when looking for white targets, subliminal black distractors should capture attention. Here, we used subliminal singleton-onset distractors in the same vertical hemifield as the target versus singleton-onset distractors in the opposite vertical field to the target, and tested whether oculomotor capture by these distractors depended on a match between the searched-for target contrasts and the distractor contrasts, by measuring saccade latency, saccade trajectory deviation, and saccade endpoint deviation. We found evidence for oculomotor capture: subliminal distractors in the opposite field delayed saccade execution towards the target. This delay was found in comparison to subliminal distractors in the same hemifield as the target. In line with a bottom-up explanation, this delay was independent of the similarity between the distractor contrast polarity and the searched-for target contrast polarity. Together with the subliminality of the distractors, the experiment confirmed bottom-up oculomotor capture by subliminal singleton-onsets.
      (Copyright © 2014 Elsevier B.V. All rights reserved.)
    • Contributed Indexing:
      Keywords: Attention capture; Cueing; Saccades; Subliminal perception
    • Publication Date:
      Date Created: 20140422 Date Completed: 20150114 Latest Revision: 20140609
    • Publication Date:
      20231215
    • Accession Number:
      10.1016/j.visres.2014.03.014
    • Accession Number:
      24747830