Modulating Prefrontal Circuits Underlying Behavioral Flexibility in OCD: A TMS Study
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Obsessive-Compulsive Disorder
- Sponsor
- Butler Hospital
- Enrollment
- 68
- Locations
- 1
- Primary Endpoint
- Resting-state functional connectivity with dorsal striatum
- Status
- Completed
- Last Updated
- 3 years ago
Overview
Brief Summary
This study investigates whether slow-frequency repetitive transcranial magnetic stimulation targeting frontal pole can acutely modulate brain circuits which show abnormal functioning during behavioral flexibility in obsessive-compulsive disorder, as well as performance on a behavioral task.
Investigators
Eligibility Criteria
Inclusion Criteria
- •current primary diagnosis of obsessive-compulsive disorder and Yale-Brown Obsessive Compulsive Scale total score ≥ 16;
- •18-55 years of age;
- •ability to speak, read, write, and understand English sufficiently well to complete study procedures and provide informed consent;
- •either no use of psychiatric medication or stable psychiatric medication use for 6 weeks prior to study entry, limited to use of serotonin reuptake inhibitors and PRN use of benzodiazepines (other psychiatric medication use excluded), and
- •right-handed.
- •Inclusion Criteria: Healthy Control group
- •18-55 years of age;
- •ability to speak, read, write, and understand English sufficiently well to complete study procedures and provide informed consent;
- •right-handed.
Exclusion Criteria
- •active problematic substance use;
- •lifetime psychosis or bipolar mood disorder or OCD beliefs of delusional nature;
- •clinically significant hoarding symptoms;
- •active suicidal or homicidal ideation;
- •significant neurological disease or intracranial pathology;
- •use of medications which increase risk for seizures during TMS;
- •significant or unstable medical disorders or contraindication to TMS or MRI scan.
- •Exclusion Criteria: Healthy Control group
- •current psychiatric diagnosis;
- •lifetime psychosis, bipolar mood disorder, or OCD;
Outcomes
Primary Outcomes
Resting-state functional connectivity with dorsal striatum
Time Frame: Before rTMS and approximately 1 day following open-label rTMS
Resting-state functional connectivity with dorsal striatum (assessed via fMRI)
Cognitive flexibility task performance
Time Frame: Before rTMS and approximately 1 day following open-label rTMS
Behavioral performance on a cognitive flexibility task (% trials correct)
Resting-state functional connectivity with ventral striatum
Time Frame: Before rTMS and approximately 1 day following open-label rTMS
Resting-state functional connectivity with ventral striatum (assessed via fMRI)