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Related Experiment Videos

Change blindness and priming: When it does and does not occur.

Michael E Silverman1, Arien Mack

  • 1Mount Sinai School of Medicine, Department of Psychiatry, Box 1230, NY 10029, USA. michael.silverman@mssm.edu

Consciousness and Cognition
|December 27, 2005
PubMed
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Even when changes are missed in change blindness (CB), both pre-change and post-change visual information are implicitly processed. However, conscious change detection only utilizes post-change information for priming.

Area of Science:

  • Cognitive Psychology
  • Visual Perception
  • Neuroscience

Background:

  • Change blindness (CB) is a phenomenon where significant changes in a visual scene go unnoticed.
  • The underlying mechanisms of implicit representation during CB are not fully understood.
  • Investigating unconscious processing of visual information is crucial for understanding perception.

Purpose of the Study:

  • To explore the nature of implicit representations in change blindness (CB).
  • To determine what visual information is processed implicitly when changes are not consciously detected.
  • To compare implicit processing during successful change detection versus CB.

Main Methods:

  • Three experiments used 3x3 letter arrays with changes in one, two, or three letters.

Related Experiment Videos

  • Paired arrays were presented with a short inter-stimulus interval (ISI) of 80 ms.
  • Partial report (PR) and repetition priming tasks were employed to assess implicit memory.

    • Main Results:

    • When change blindness occurred, both pre-change and post-change stimulus information facilitated priming, despite being unavailable to consciousness.
    • When change detection was successful, only the post-change stimulus information facilitated priming.
    • Implicit priming occurred even when conscious awareness of the change was absent.

    Conclusions:

    • Implicit representations persist even when visual information is not consciously perceived during change blindness.
    • Conscious awareness of a change is necessary to restrict implicit priming to post-change information.
    • This suggests distinct processing pathways for conscious and unconscious visual information.