Neural propensity for trait rumination in adolescents: A cross-sectional study with Voxel-Based Morphometry

Area of Science:

• Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Rumination is a significant risk factor for psychopathology in adolescents.
• Existing research on the neuroscience of rumination primarily focuses on adults, leaving a gap in understanding adolescent neural correlates.
• Identifying structural neural correlates of rumination in adolescents is crucial for understanding developmental psychopathology.

Purpose of the Study:

• To investigate the structural neural correlates of trait rumination in adolescents.
• To examine the association between trait rumination and gray matter density in specific brain regions.

Main Methods:

• Voxel-Based Morphometry (VBM) was employed to analyze brain structure.
• The study included 95 adolescents.
• Trait rumination levels were assessed and correlated with gray matter density.

Main Results:

• Higher trait rumination was associated with lower gray matter density in the left orbitofrontal cortex, inferior frontal gyrus, dorsolateral prefrontal gyrus, and bilateral temporal gyrus.
• These regions are implicated in inhibitory control, language processing, executive functioning, and social cognition.
• Increased gray matter density in the caudate and insula, regions associated with impulsivity and negative emotions, was also observed with higher trait rumination.

Conclusions:

• The findings suggest specific structural brain differences associated with adolescent rumination.
• While largely consistent with adult studies, age and psychopathology severity may explain some discrepancies.
• This study provides foundational insights into the neural underpinnings of rumination during adolescence.