Mechanisms and interventions promoting healthy frontostriatal dynamics in obsessive-compulsive disorder

Area of Science:

• Neuroscience
• Computational Psychiatry
• Clinical Psychology

Background:

• Obsessive-compulsive disorder (OCD) is characterized by persistent distressful thoughts and repetitive behaviors.
• OCD is linked to functional imbalances in ventral and dorsal frontostriatal circuits.
• Neural mechanisms and therapeutic targets for OCD remain incompletely understood.

Purpose of the Study:

• To elucidate the neural mechanisms underlying OCD.
• To investigate the association between neural dysregulations and OCD symptom severity.
• To identify novel therapeutic targets for OCD.

Main Methods:

• Combined neuroimaging and behavioral data from individuals with OCD and controls.
• Utilized computational modeling to analyze neural activity and connectivity.
• Examined longitudinal changes in symptoms in relation to modeled neural interventions.

Main Results:

• Bidirectionally decreasing ventromedial circuit coupling and increasing dorsolateral cortico-striatal coupling improved OCD symptoms.
• Model-predicted neural interventions correlated with observed longitudinal symptom changes.
• Identified behaviorally relevant neural mechanisms not apparent through traditional neuroimaging.

Conclusions:

• Neural circuit modulation offers a promising therapeutic strategy for OCD.
• This study advances understanding of the neural basis of OCD.
• Provides novel targets for treating obsessions and compulsions in OCD.