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Pubertal testosterone influences threat-related amygdala-orbitofrontal cortex coupling.

Jeffrey M Spielberg1, Erika E Forbes2, Cecile D Ladouceur2

  • 1Department of Psychology, University of California, Berkeley, CA, Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, Department of Anthropology, Emory University, Alanta, GA, and Department of Psychology, Institute of Human Development, University of California, Berkeley, CA, USA spielbergjm@gmail.com.

Social Cognitive and Affective Neuroscience
|May 6, 2014
PubMed
Summary

Puberty increases threat reactivity due to testosterone disrupting amygdala-orbitofrontal cortex (OFC) coupling, potentially explaining adolescent mood disorders. This study reveals key neurodevelopmental pathways.

Keywords:
OFCamygdaleconnectivitypubertytestosteronethreat

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Adolescent Psychiatry

Background:

  • Adolescence is marked by increased threat reactivity and affective disorders.
  • Neural mechanisms underlying this pubertal shift are largely unknown.
  • Testosterone in adults reduces amygdala-orbitofrontal cortex (OFC) coupling.

Purpose of the Study:

  • To investigate the neural mechanisms linking pubertal maturation to increased threat reactivity.
  • To test the hypothesis that pubertal testosterone disrupts amygdala-OFC coupling.
  • To explore neurodevelopmental pathways contributing to adolescent vulnerability.

Main Methods:

  • Longitudinal study design.
  • Examination of testosterone's impact on functional connectivity.
  • Analysis of amygdala-orbitofrontal cortex (OFC) coupling.

Main Results:

  • Findings supported the hypothesis that increased pubertal testosterone disrupts amygdala-OFC coupling.
  • Evidence suggests this disruption contributes to heightened threat reactivity in some adolescents.
  • The study advances understanding of pubertal changes in affect/motivation neural systems.

Conclusions:

  • Testosterone-mediated disruption of amygdala-OFC coupling is a key mechanism in adolescent threat reactivity.
  • This neurodevelopmental pathway may increase vulnerability to affective disorders.
  • Understanding these mechanisms offers insights into adolescent behavioral and emotional problems.