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Related Experiment Videos

Sensory registration and informational persistence.

D E Irwin, J M Yeomans

    Journal of Experimental Psychology. Human Perception and Performance
    |August 1, 1986
    PubMed
    Summary
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    Iconic memory research challenges traditional views. This study suggests visual information persists post-stimulus, supporting a visual memory model, but also indicates non-visual factors influence memory accuracy.

    Area of Science:

    • Cognitive Psychology
    • Visual Perception
    • Human Memory

    Background:

    • Traditional iconic memory models posit a precategorical, high-capacity, rapidly decaying visual store.
    • Recent research distinguishes between visible persistence (phenomenal trace) and informational persistence (knowledge of visual properties).

    Purpose of the Study:

    • To test two alternative models of informational persistence: a visual memory model and a non-visual (spatial/identity codes) memory model.
    • To investigate the duration and nature of visual information persistence after stimulus offset.

    Main Methods:

    • Three experiments presented 3x3 letter arrays for durations from 50 to 500 ms.
    • A mask presented after array offset cued a specific row for reporting.
    • Masked and unmasked letter reports were compared to assess information persistence.

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    Main Results:

    • Spatially-specific visual information persisted post-stimulus, independent of initial exposure duration, supporting the visual memory model.
    • Increased accuracy and decreased intrusion errors with longer stimulus durations supported the non-visual memory model.
    • Evidence was found for both visual and non-visual components of informational persistence.

    Conclusions:

    • Informational persistence likely involves both a rapidly decaying visual trace and a non-visual memory component influenced by exposure duration.
    • Findings have implications for understanding visual memory models and transsaccadic integration during reading.