NCT03203954

Testing the Neuroscience of Guided Learning in Depression

Neural Substrates of Reinforcement Learning and Its Training in Major Depression

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 216 (estimated)
• Sponsor: Virginia Polytechnic Institute and State University · Academic / Other
• Sex: All
• Age: 18 Years – 55 Years
• Healthy volunteers: Accepted

Summary

Major depression is a prevalent and impairing illness. To better understand the basic science and treatment of depression, the investigators study the behavioral and brain processes associated with learning in depression and how potential disruptions in learning may be repaired. Understanding different methods that change learning may lead to novel treatments that contribute to recovery in people with depression.

Detailed description

Major depressive disorder ranks among the most significant causes of mortality and disability in the world. Recent data from the investigators and others highlight that impairments in reward and loss learning are central to depression, have distinct neural substrates, and improve with successful treatment. Together, these findings suggest an urgent need to delineate the relationships among neural and behavioral learning impairments and depression. Equally important, these insights suggest new targets for treatment such that manipulating the neural and behavioral substrates of learning may facilitate symptom change in depression. To address these issues, the investigators use functional neuroimaging and a computational psychiatry framework to i) systematically characterize the neural and behavioral substrates that attend reward- and loss- learning in depression and ii) assess the degree to which learning in depression responds to two behavioral methods that target learning in different ways. The investigators test the broad hypotheses that i) that depression may be characterized by distinct neural and behavioral disruptions of learning, and ii) these disruptions and associated symptoms may be ameliorated through different methods of guiding learning. Recent advances in computational psychiatry provide a mechanism-based framework within which to understand the nature and trajectory of potential learning impairments in depression and suggest new ways that disrupted learning and associated symptoms may be improved in depression

Conditions

• Major Depressive Disorder

Interventions

Type	Name	Description
BEHAVIORAL	Standard Learning	Participants will complete repeat sessions of a computer-based learning task, and task performance and symptoms will be assessed.
BEHAVIORAL	Guided Learning: Instructed statistics	Participants will complete repeat sessions of a computer-based learning task, and task performance and symptoms will be assessed.
BEHAVIORAL	Guided Learning: Changing statistics	Participants will complete repeat sessions of a computer-based learning task, and task performance and symptoms will be assessed.

Timeline

• Start date: 2016-05-01
• Primary completion: 2021-12-01
• Completion: 2021-12-01
• First posted: 2017-06-29
• Last updated: 2022-07-08

Locations

1 site across 1 country: United States