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Published on: December 24, 2013
[Obsessive-compulsive disorder and the basal ganglia]
1Instituto de Psiquiatria, Universidade de São Paulo.
Arquivos De Neuro-Psiquiatria
|December 1, 1995
Summary
Obsessive-compulsive disorder (OCD) may be linked to alterations in the basal ganglia, particularly the caudate nucleus. Research suggests impaired caudate function could lead to compulsions in OCD patients.
Area of Science:
- Neuroscience
- Psychiatry
Context:
- Obsessive-compulsive disorder (OCD) involves obsessions and compulsions.
- Basal ganglia, traditionally linked to motor control, are now recognized for cognitive functions.
- Previous research indicates a potential link between basal ganglia lesions and OCD frequency.
Purpose:
- To explore the role of basal ganglia structures in the pathophysiology of OCD.
- To investigate the association between caudate nucleus size and OCD.
- To examine neuroimaging findings related to OCD-associated neurocircuits.
Summary:
- Recent magnetic resonance imaging studies show a trend towards a smaller caudate nucleus in OCD patients.
- Functional neuroimaging implicates a neurocircuit including the orbitalfrontal cortex, cingulate cortex, caudate nucleus, and thalamus in OCD.
- A leading hypothesis suggests that a caudate nucleus functional deficit impairs worry filtering, prompting orbitalfrontal cortex-driven compulsions.
Impact:
- Highlights the basal ganglia's crucial role in cognitive processing and mental health disorders.
- Provides a neurobiological basis for understanding OCD pathophysiology.
- Suggests potential targets for future therapeutic interventions in OCD.
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