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Amygdala circuit transitions supporting developmentally-appropriate social behavior.

Nicole C Ferrara1, Maya Opendak2

  • 1Discipline of Physiology and Biophysics, Department of Foundational Sciences and Humanities, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA; Center for Neurobiology of Stress Resilience and Psychiatric Disorders, Rosalind Franklin University of Medicine and Science, North Chicago, IL, USA.

Neurobiology of Learning and Memory
|April 28, 2023
PubMed
Summary

The basolateral amygdala (BLA) matures from birth through adolescence, influencing social behaviors. Dopamine and GABAergic circuits in the BLA guide social transitions from attachment to peer interactions.

Keywords:
AmygdalaDevelopmentDopamineSocial behaviormPFC

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Behavioral Science

Background:

  • Social behaviors undergo significant transformations across the lifespan, paralleling neural circuit maturation.
  • The basolateral amygdala (BLA) exhibits critical developmental changes from birth through adolescence, impacting social interactions.

Approach:

  • This review synthesizes rodent data to map the developmental trajectory of BLA circuits.
  • It examines the influence of dopaminergic systems on BLA maturation and social behavior.
  • Viral circuit dissection and early adversity paradigms are used to investigate BLA function.

Key Points:

  • Early life social behavior involves attachment, with minimal BLA involvement.
  • Dopaminergic innervation of the BLA around weaning introduces avoidance of novel peers.
  • Adolescent BLA maturation involves increased GABAergic inhibition and mPFC engagement, facilitating peer interactions.

Conclusions:

  • The BLA plays an increasingly vital role in regulating social behavior during adolescence.
  • BLA circuit maturation is sensitive to early life experiences and crucial for age-appropriate social behavior.