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Ralf Schmälzle1,2, Matthew Brook O'Donnell2, Javier O Garcia3

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Adolescent Development

Background:

  • Social ties are fundamental to human well-being.
  • Social exclusion significantly affects emotional and cognitive states.
  • Broader social network resources can mitigate negative effects of exclusion.

Purpose of the Study:

  • Investigate how social exclusion modulates functional brain connectivity in adolescents.
  • Examine the relationship between brain reactivity to social exclusion and friendship network density.
  • Understand brain network dynamics in response to social-emotional challenges.

Main Methods:

  • fMRI data from 80 male adolescents during social exclusion/inclusion tasks.
  • Analysis of functional connectivity within social pain and mentalizing brain networks.
  • Correlation analysis with objectively logged friendship network data.

Main Results:

  • Increased functional connectivity within the mentalizing system during social exclusion compared to inclusion.
  • Whole-brain analysis confirmed heightened connectivity in mentalizing regions.
  • Adolescents with less dense friendship networks exhibited greater changes in mentalizing system connectivity when socially excluded.

Conclusions:

  • Social exclusion uniquely modulates brain network connectivity, particularly in mentalizing systems.
  • Friendship network density is associated with individual differences in brain responses to social exclusion.
  • This research offers insights into the neural underpinnings of social challenges and their modulation by social structure.