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Interhemispheric effects in short-term recognition memory for single words

L Leiber

    Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
    |April 1, 1982
    PubMed
    Summary
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    Imagery affects initial word recognition, but not repetitions. Left visual field (LVF) repetition accuracy was consistent, while right visual field (RVF) accuracy decreased when initial words were in the LVF, suggesting hemispheric asymmetry.

    Area of Science:

    • Cognitive Psychology
    • Neuroscience
    • Experimental Psychology

    Background:

    • Short-term memory is crucial for cognitive function.
    • Visual field processing and hemispheric asymmetry are key areas in memory research.
    • Word characteristics like imagery and frequency influence memory performance.

    Purpose of the Study:

    • To investigate the effects of word imagery and presentation location on short-term recognition memory.
    • To examine hemispheric differences in verbal information processing and storage.
    • To test the hypothesis of language-dominant hemisphere confinement for verbal memory.

    Main Methods:

    • Twenty male undergraduates participated in a recognition memory experiment.
    • Words varying in imagery and frequency were presented to the right visual field (RVF) and left visual field (LVF).

    Related Experiment Videos

  • Stimuli were presented either to the same or opposite visual fields on successive trials.

    • Main Results:

    • Imagery affected initial word presentations but not repetitions.
    • Left visual field (LVF) repetition recognition speed and accuracy were consistent regardless of initial presentation field.
    • Right visual field (RVF) repetition recognition was slower and less accurate for words initially presented in the LVF.

    Conclusions:

    • Findings suggest differential encoding or asymmetrical storage of verbal information in brain hemispheres.
    • Results challenge the theory that verbal memory is exclusively stored in the language-dominant hemisphere.
    • Hemispheric specialization influences short-term verbal recognition memory processes.