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During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the...
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Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
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White matter integrity in adolescent irritability: A preliminary study.

Elizabeth A Hodgdon1, Kelly E Courtney2, Marvin Yan1

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Adolescent irritability is linked to distinct white matter tract differences. This study reveals complex neural pathways, including emotion and reward networks, associated with irritability in teens.

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Area of Science:

  • Neuroscience
  • Adolescent Psychology
  • Neuroimaging

Background:

  • Irritability is a common and impairing symptom in adolescents.
  • Neural mechanisms underlying irritability, especially in non-clinical samples, are not well understood.
  • Previous research on white matter integrity in irritability focused on extreme, disorder-specific presentations.

Purpose of the Study:

  • To investigate the white matter tract correlates of transdiagnostic irritability in a sample of adolescents.
  • To explore both positive and negative associations between white matter integrity and irritability.
  • To advance understanding of the neural underpinnings of irritability for potential intervention development.

Main Methods:

  • Utilized a group connectometry approach.
  • Analyzed a community/clinic-based sample of 35 adolescents (mean age 14 years).
  • Identified specific white matter tracts associated with irritability.

Main Results:

  • Found significant positive and negative associations between irritability and local white matter tract bundles.
  • Identified tracts include sections of the longitudinal fasciculus, frontoparietal, parolfactory, and parahippocampal cingulum, corticostriatal and thalamocortical radiations, and the vertical occipital fasciculus.
  • Results suggest widespread neural pathways, including emotion and reward networks, are implicated in irritability.

Conclusions:

  • The neural basis of irritability in adolescents is complex, involving widespread white matter pathways.
  • Findings support the role of emotion and reward networks in irritability.
  • Characterizing these neural underpinnings may facilitate the development of targeted interventions for adolescent irritability.