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Neural connectivity biotypes: associations with internalizing problems throughout adolescence.

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  • 1Department of Human Ecology, University of California, Davis, One Shields Avenue, Davis, CA95618, USA.

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Brain connectivity patterns in adolescents can predict internalizing problems. A hyper-connected brain network at age 16 was linked to higher past and future internalizing symptoms, suggesting a risk indicator.

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Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Psychiatry

Background:

  • Adolescence sees a rise in internalizing symptoms.
  • Altered resting-state functional connectivity (RSFC) is observed in adolescents with internalizing problems.
  • It remains unclear if brain connectivity patterns can differentiate internalizing problem severity in adolescents.

Purpose of the Study:

  • To investigate if connectivity-based biotypes can differentiate levels of internalizing problems in adolescents.
  • To identify neurophysiological patterns associated with internalizing symptoms during adolescence.

Main Methods:

  • Sixty-eight adolescents underwent resting-state functional neuroimaging at age 16.
  • Subgroup-Group Iterative Multi-Model Estimation identified biotypes based on RSFC.
  • Regression analyses examined associations between internalizing problems and biotypes.

Main Results:

  • Two biotypes emerged: 'Diffusely-connected' (long-range fronto-parietal) and 'Hyper-connected' (subcortical-medial frontal).
  • Past internalizing problems predicted higher likelihood of the 'Hyper-connected' biotype.
  • The 'Hyper-connected' biotype was associated with higher concurrent and future internalizing problems.

Conclusions:

  • Differential RSFC patterns in socio-affective brain regions are predicted by earlier internalizing problems and predict future problems.
  • Connectivity-based biotypes in adolescence may identify youth at elevated risk for internalizing disorders.