This project aims to collect a densely sampled neuroimaging dataset among individuals receiving medications for opioid use disorder (MOUD). MOUD is multiphasic, comprised of medication induction, stabilization, ongoing treatment, and eventual dis-continuation phases. However, with a few small exceptions, existing neuroimaging efforts are almost exclusively single time-point assessments which, by definition, fail to capture these clinically relevant transitions and thus also do not capture individual risk and resilience trajectories. The investigators innovation, the characterization of neurocomputational trajectories during clinically relevant phases of MOUD treatment, will provide unprecedented mechanistic insight into the neurobiological basis of recovery. Once characterized, such trajectories may be used in the identification of specific therapeutic windows for additional intervention (e.g., times of increased neural plasticity) and in the design of novel tailored interventions based on known brain mechanisms (e.g., behavioral therapy, neurostimulation, neurofeedback).
MOUD individuals between the ages of 18 and 50 who recently enrolled in methadone treatment at APT Foundation clinics in the greater New Haven area. Investigators will aim to recruit individuals as early as possible in treatment, but individuals may be within the first 6 months of treatment at the time of screening, as this may be necessary to ensure that they are on a stable dose of methadone. AIM 1 - Longitudinal neural fingerprinting of MOUD to repeatedly characterize neural trajectories of individuals in early methadone treatment. AIM 2 - Complementary, longitudinal computational phenotyping of MOUD to repeatedly characterize behavioral, computational trajectories of individuals in early methadone treatment. After participation in the main study, participants will be asked to complete a 15-minute follow up every month for an additional three months.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
10
Participants will be performing tasks while undergoing fMRI. Tasks include Stroop task, Emotion-regulation task and an Ambiguity reward task. There will also be a Resting state: Participants are not presented with any specific stimulus.
MRRC at The Anlyan Center
New Haven, Connecticut, United States
RECRUITINGChange in Relationship between functional connectivity within canonical neural networks and within the 'opioid abstinence network' and opioid use
Relationship between functional connectivity within canonical neural networks and within the 'opioid abstinence network' and opioid use over 6 biweekly sessions. Functional connectivity is computed as the Pearson's correlation between two brain regions, or 'nodes'. This will be done in a pairwise manner to obtain connectivity values for all possible node pairs in the Shen atlas, a 268-node atlas covering the cortex, subcortex and cerebellum. Correlation coefficients are transformed to Z-scores using Fisher's r-to-z transformation. Connectivity within a given network is defined as the mean of the Z values for all of the edges (connection between two node pairs) within the network.
Time frame: up to 12 weeks
Change in Presence or absence of opioid use
Relationship between performance on the risk and ambiguity task and opioid use over 12 weekly sessions. Parameters are computed from the participant's choice data during task performance at each weekly time point. The primary task parameter is α. This is a participant-specific known-risk tolerance parameter.
Time frame: up to 12 weeks
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