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Related Experiment Videos

Anatomical correlates of functional plasticity in mouse visual cortex.

A Antonini1, M Fagiolini, M P Stryker

  • 1W. M. Keck Foundation Center for Integrative Neuroscience, Department of Physiology, University of California, San Francisco, California 94143-0444, USA.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|May 26, 1999
PubMed
Summary

This study investigates anatomical and functional plasticity in the developing mouse visual cortex. Findings reveal similarities and differences compared to higher mammals, particularly regarding ocular dominance and terminal arbor growth after monocular deprivation.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Neuroplasticity

Background:

  • Activity-dependent plasticity is crucial for visual system development.
  • Understanding molecular mechanisms in mammals is limited.
  • Mouse models offer genetic tractability for studying plasticity.

Purpose of the Study:

  • To investigate anatomical changes accompanying functional plasticity in the developing mouse visual cortex.
  • To compare plasticity mechanisms in mice with those in higher mammals.
  • To explore the effects of monocular deprivation on visual cortex development.

Main Methods:

  • Transneuronal labeling to delineate visual pathways.
  • Intrinsic signal optical imaging for functional mapping.
  • Microelectrode recordings to assess neural activity.

Related Experiment Videos

  • Reconstruction of single geniculocortical afferents.

    • Main Results:

    • Monocular and binocular zones were identified in normal mice.
    • Prolonged monocular deprivation (MD) severely affected ipsilateral eye projections.
    • MD promoted open eye connections and arrested deprived eye arbor growth.
    • Functional plasticity persisted past postnatal day 40.

    Conclusions:

    • Mouse visual cortex development and plasticity share similarities with higher mammals.
    • Differences in plasticity mechanisms and timing were observed.
    • Factors contributing to these differences warrant further investigation.