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Linking Limbic-Prefrontal White Matter Microstructure to Behavioral Problems Following Pediatric Traumatic Brain

Dana DeMaster1, Christopher G Watson1, Mary R Prasad1

  • 1Department of Pediatrics, Children's Learning Institute, Houston, Texas, USA.

Journal of Neurotrauma
|November 5, 2025
PubMed

Insights

Traumatic brain injury (TBI) in children disrupts white matter pathways, predicting new behavioral problems. This study links altered limbic-prefrontal circuitry microstructure to internalizing and externalizing behaviors post-injury.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pediatric Traumatology

Background:

  • Diffusion tensor imaging (DTI) studies indicate abnormal white matter in limbic-prefrontal circuitry is linked to behavioral issues in children.
  • The relationship between atypical limbic-prefrontal circuitry and new behavioral problems following traumatic injury in children is under-examined.

Purpose of the Study:

  • To investigate white matter microstructure in children 7 weeks post-traumatic brain injury (TBI) or extracranial injury (EI) compared to typically developing children (TDC).
  • To examine the association between white matter integrity in limbic-prefrontal pathways and internalizing/externalizing behavioral problems.
  • To determine if injury type influences the relationship between white matter microstructure and behavioral outcomes.

Main Methods:

  • Prospective longitudinal study of children aged 8-15 years.
  • White matter microstructure assessed using DTI with seed-to-seed analysis of limbic-prefrontal tracts (amygdala, hippocampus).
  • Fractional anisotropy (FA) calculated; behavioral problems assessed via Child Behavior Checklist (preinjury and postinjury).

Main Results:

  • Children with injuries exhibited higher postinjury internalizing problem scores than TDC.
  • Lower FA was observed in pathways connecting hippocampi to nucleus accumbens and parahippocampal cingulate in injured children.
  • Behavioral problems were associated with FA in pathways connecting hippocampi to amygdalae, medial orbitalfrontal cortex, and parahippocampal cingulate; the relationship was negative for TBI and neutral/positive for EI/TDC.

Conclusions:

  • Disrupted microstructural organization of the limbic-prefrontal circuitry predicts behavioral problems following TBI in children.
  • Specific white matter pathway alterations are associated with internalizing and externalizing behaviors post-injury.
  • The findings highlight the neurobiological underpinnings of behavioral changes after pediatric TBI.

Keywords:
AGEbehaviordiffusion tensor imagingpediatric brain injury

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