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Gambling disorder may be linked to specific brain structure differences. Individuals with gambling disorder show altered orbitofrontal cortex (OFC) sulcogyral patterns, particularly Type II, suggesting a potential pre-morbid marker.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Brain Imaging

Background:

  • Gambling disorder involves impaired decision-making and reward processing, linked to orbitofrontal cortex (OFC) dysfunction.
  • It is unclear if these functional OFC abnormalities correlate with structural changes.

Purpose of the Study:

  • To investigate structural differences in the OFC, specifically sulcogyral patterns, in individuals with gambling disorder.
  • To determine if OFC sulcogyral patterns serve as potential pre-morbid markers for gambling disorder.

Main Methods:

  • Meta-analysis of structural brain data from nine studies, including 165 individuals with gambling disorder and 159 healthy controls.
  • Classification of OFC sulcogyral patterns into Types I, II, and III.
  • Statistical analysis using frequentist and Bayesian approaches.

Main Results:

  • A skewed distribution of OFC sulcogyral patterns was observed in individuals with gambling disorder compared to controls.
  • The Type II OFC sulcogyral pattern was more prevalent in the gambling disorder group.
  • No significant relationship was found between OFC sulcogyral patterns and gambling severity.

Conclusions:

  • OFC sulcogyral pattern distribution is altered in gambling disorder.
  • OFC Type II pattern may represent a pre-morbid structural brain marker for gambling disorder.
  • Further research is needed to explore the functional implications of these structural findings.