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Related Experiment Videos

Cortical depth changes in enriched and isolated mice

R A Cummins, P J Livesey, J A Bell

    Developmental Psychobiology
    |May 1, 1982
    PubMed
    Summary
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    Occipital cortical depth in mice peaks at 20 days and declines with age. Environmental enrichment slows this decline, suggesting sensory stimulation impacts cortical development.

    Area of Science:

    • Neuroscience
    • Developmental Biology
    • Animal Models

    Background:

    • Cortical depth is a key indicator of brain development and function.
    • Understanding factors influencing cortical development is crucial for neuroscience research.

    Purpose of the Study:

    • To investigate the developmental trajectory of occipital cortical depth in mice.
    • To determine the influence of postweaning environmental enrichment versus isolation on cortical depth.

    Main Methods:

    • Measurement of occipital cortical depth in laboratory mice at 14 and 20 days of age.
    • Assessment of cortical depth after varying periods of postweaning exposure to enriched or isolated environments.

    Main Results:

    • Occipital cortical depth was maximal at 20 days of age.

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  • Cortical depth declined after 20 days, irrespective of environmental conditions.
  • The rate of cortical depth decrease was slower in enriched environments compared to isolated ones.

    • Conclusions:

    • Postweaning cortical depth is influenced by an age-related decline that can be modulated by sensory stimulation.
    • Environmental enrichment may attenuate the rate of age-related cortical depth decrease.
    • Postweaning cortical depth may serve as a biomarker for neuronal development and metabolic activity.