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Related Experiment Videos

Evidence for neocortical involvement in reference memory.

R P Kesner, B V DiMattia, K A Crutcher

    Behavioral and Neural Biology
    |January 1, 1987
    PubMed
    Summary
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    The neocortex and its cholinergic pathways are crucial for reference memory in rats. Lesions affecting these areas impaired long-term memory but not short-term working memory.

    Area of Science:

    • Neuroscience
    • Cognitive Psychology
    • Animal Behavior

    Background:

    • Working memory and reference memory are distinct cognitive functions.
    • The role of specific brain regions in these memory types requires further elucidation.

    Purpose of the Study:

    • To investigate the involvement of the parietal cortex, medial prefrontal cortex, and nucleus basalis magnocellularis in working and reference memory.

    Main Methods:

    • Rats were trained on an eight-arm radial maze task.
    • Lesions were induced in the parietal cortex, medial prefrontal cortex, visual cortex, or nucleus basalis magnocellularis.
    • Performance on working and reference memory tasks was assessed post-lesion.

    Main Results:

    • Visual cortex lesions had no effect on memory.

    Related Experiment Videos

  • Parietal cortex lesions caused temporary reference memory deficits.
  • Medial prefrontal cortex lesions resulted in temporary deficits in both memory types.
  • Nucleus basalis magnocellularis lesions significantly impaired reference memory but not working memory.

    • Conclusions:

    • The neocortex, particularly its cholinergic projections, plays a significant role in mediating reference memory.
    • Working memory appears to be less dependent on these specific neocortical structures and cholinergic pathways.