Functional Connectivity Mechanisms of Opioid Abstinence

Inclusion Criteria: * recent initiation of methadone or buprenorphine at a clinic, program, or doctor within the past year (i.e., period of time during which treatment drop-out and risk for relapse is highest); * eligibility for MRI scanning; * ability to commit to study visits. Exclusion Criteria: * current acute psychosis, mania, or suicidal ideation with intent, as assessed during screening with the SCID-5; * current intoxication or acute withdrawal at time of study visit sufficient to prevent participation based on: behavioral observation, breathalyzer, and SOWS assessment; * severe cog…