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Brain structural and functional development: genetics and experience.

Nicoletta Berardi1, Alessandro Sale, Lamberto Maffei

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Early environment shapes brain development through plasticity. Enriched environments can enhance adult brain plasticity, aiding recovery from developmental deficits like amblyopia, even after critical periods close.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Biology

Background:

  • Brain development is a complex interplay between genetic factors and environmental influences.
  • Environmental enrichment during early life can significantly impact neural circuit development and function.
  • Critical periods represent sensitive time windows where experience most effectively shapes neural development.

Purpose of the Study:

  • To explore how environmental richness influences brain development via cellular and molecular plasticity mechanisms.
  • To investigate the potential for enhancing adult cortical plasticity to recover from neurodevelopmental defects.
  • To examine the role of critical periods in brain development and the possibility of intervention beyond these windows.

Main Methods:

  • Review of cellular and molecular plasticity mechanisms in brain development.
  • Analysis of the impact of environmental enrichment on neural circuits.
  • Examination of case studies, such as amblyopia, to illustrate developmental deficits.
  • Investigation of recent findings on interventions using enriched environments in adults.

Main Results:

  • Rich early environments can induce long-term changes in neural structure and function.
  • Deficits occurring after critical periods, like amblyopia, are typically difficult to reverse in adults.
  • Enriched environment protocols can enhance adult cortical plasticity and facilitate recovery from amblyopia.

Conclusions:

  • Understanding how environmental factors engage endogenous plasticity is key to developing interventions.
  • It may be possible to promote recovery from neurodevelopmental defects even after critical periods have closed.
  • Targeting plasticity factors offers a promising avenue for therapeutic strategies in neurodevelopmental disorders.