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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05383248
Other study ID # 309646-00001
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 14, 2022
Est. completion date November 16, 2023

Study information

Verified date November 2023
Source University of California, San Diego
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Anhedonia, i.e., reduced positive mood and decreased sensitivity to rewards, is observed in many psychiatric illnesses, particularly depression and anxiety disorders. Untreated anhedonia predicts worse clinical outcomes and poorer response to treatment, yet cognitive behavioral treatment approaches to target anhedonia are fraught with poor patient compliance in real-life settings. The proposed study aims to address this gap by 1) testing the usefulness of a non-invasive, computationally informed, cognitive training in boosting reward sensitivity and reducing anhedonia in depressed and anxious patients, and 2) delineating the neurocomputational mechanisms of change associated with such intervention. In other words, can we train the brain to obtain rewards and boost positive mood among depressed and anxious individuals? This project will help to develop a computational training protocol aimed at reducing anhedonia and improving existing interventions for psychiatric conditions characterized by reward processing deficits. Long-term goals include expanding this framework to a broader range of appetitive and social stimuli to develop precise cognitive training tools to treat anhedonia.


Recruitment information / eligibility

Status Completed
Enrollment 50
Est. completion date November 16, 2023
Est. primary completion date November 16, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years to 65 Years
Eligibility Inclusion Criteria: - Age 18-65 (all races, both males and females will be included) - Current diagnosis of Major Depressive Disorder (MDD) or Generalized Anxiety Disorder (GAD) - A score < 7 on the Snaith-Hamilton Pleasure Scale (SHAPS) or < 25 on the Positive Affect subscale from the Positive And Negative Affect Scale (PANAS) - Sufficient proficiency in English language to understand and complete informed consent, interviews, questionnaires, and all other study procedures. - Having normal or corrected vision - Having normal or corrected hearing Exclusion Criteria: - Endorsement of past or current psychotic or bipolar disorder. - Endorsement of recent severe alcohol or substance use disorder (past 3 months). - Inability to discontinue for 48 hours prior to scan any medications incompatible with measuring reliable/interpretable neural activity (e.g., e.g., benzodiazepines/beta-blockers, atypical anti-depressants, anxiolytics and sedative hypnotics, antipsychotics, and opioid analgesics) - Being unsafe to undergo functional magnetic resonance imaging (fMRI), i.e., being pregnant, presence of non-removable metal in body, medical conditions that are incompatible with safe MRI (e.g., claustrophobia, inability to lie still on one's back for approximately 60 minutes; prior neurosurgery) - Clinical conditions assessed by the interviewer that necessitate more imminent clinical care (e.g., active suicidal ideation): These criteria are in place so participants with these other, more several symptoms can be referred for appropriate mental health services.

Study Design


Related Conditions & MeSH terms


Intervention

Behavioral:
High Reward - High Variance
Computerized reward learning task designed to increase reward responsiveness
High Reward - Low Variance
Computerized reward learning task designed to have minimal effect on reward responsiveness

Locations

Country Name City State
United States UCSD Center for Functional Magnetic Resonance Imaging La Jolla California

Sponsors (1)

Lead Sponsor Collaborator
University of California, San Diego

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Reward Maximization Individually fitted computational parameter of reward maximization strategy during the reward learning task Change between Pre-Training and Post-Training Assessments (about 20 min)
Primary Positive Affect State positive affect measured with the Positive and Negative Affect Schedule (PANAS) Change between Pre-Training and Post-Training Assessments (about 20 min)
Primary Neural Tracking of Reward Expectation Neural activity, i.e., blood oxygen level dependent (BOLD) response, in the striatum and medial prefrontal cortex correlating with participants' trial-level model-based reward expectations and associated prediction errors during the Reward Learning Task Change between Pre-Training and Post-Training Assessments (about 20 min)
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