Study Stopped
Study on hold - participant recruitment suspended due to staffing limitations.
Measuring the Effects of Neurostimulation on Risky and Ambiguous Decision-Making Capacity in People With and Without Substance Use Disorder
2 other identifiers
interventional
60
1 country
1
Brief Summary
Background: The purpose of this study is to understand how a type of brain stimulation, transcranial magnetic stimulation (TMS), may help those who use opioids such as heroin or methadone. TMS uses brief magnetic pulses to affect brain activity, and is approved by the FDA to treat some mental health problems and substance use. We will evaluate how TMS may help make it easier to make certain kinds of decisions that could help one manage their opioid use. Our findings may provide support for the use of brain stimulation as a treatment to reduce opioid use. Objective: To understand how TMS affects brain activity associated with decision making in people who do and do not use opioids. Eligibility: People aged 18 to 60 years with an OUD. Healthy volunteers are also needed. Design: Participants will have up to 3 clinic visits over 1 to 3 months. All participants will be screened to check if they are eligible to take part in this study. This study is completed in two parts. All eligible participants will complete the first part of the study. In the first part, you will receive one baseline magnetic resonance imaging (MRI) scan so we can take pictures of your brain while you complete computer tasks in the scanner. In these tasks, you will be asked to identify colors of words, view different images and play a game in which you can win money. If you can safely receive TMS, you will be invited to complete the second part of the study. In this part of the study, you will receive TMS and MRI over 2 sessions. For TMS, a coil will be placed on your head and a short electrical current will pass through the coil to create a magnetic pulse that stimulates your brain. You will also repeat the MRI scan and computer tasks. During one of the TMS visits you will receive active or real TMS. In the other, you will receive sham or placebo TMS, which feels like real TMS but does not affect the brain. You will receive both types of TMS. In all sessions, your urine and breath will be tested for drugs and alcohol, and you will complete questionnaires about mood and health....
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Apr 2026
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 23, 2024
CompletedFirst Posted
Study publicly available on registry
August 29, 2024
CompletedStudy Start
First participant enrolled
April 21, 2026
ExpectedPrimary Completion
Last participant's last visit for primary outcome
August 6, 2027
Study Completion
Last participant's last visit for all outcomes
August 6, 2027
April 16, 2026
March 3, 2026
1.3 years
August 23, 2024
April 15, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Determine neural correlates of risk and ambiguity tolerance in healthy controls and people with OUD.
Preliminary works demonstrates that neural correlates of risk and ambiguity tolerance are separable
1-3 months
Measure the impact of transcranial magnetic stimulation (TMS) on ambiguity tolerance in healthy controls and people with OUD
TMS has been used to modulate brain activity in areas associated with decision-making
1-3 months
Secondary Outcomes (2)
Determine the impact of TMS on resting-state brain activity
1-3 months
Determine the impact TMS on outcomes that are relevant to substance use and relapse (e.g., craving)
1-3 months
Study Arms (2)
Active TMS
ACTIVE COMPARATORParticipants will be blinded as to which sessions involve active TMS or sham. Those study staff involved in interacting with the participant will also be blinded. Participants will be randomized into either active-sham or sham-active session order.
Sham TMS
SHAM COMPARATORParticipants will be blinded as to which sessions involve active TMS or sham. Those study staff involved in interacting with the participant will also be blinded. Participants will be randomized into either active-sham or sham-active session order.
Interventions
TMS will be applied using the MagVenture MagPro 100 with MagOption (MagVenture Inc, Alpharetta, GA) stimulator with a figure-of-8 TMS coil.
Eligibility Criteria
You may qualify if:
- In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- Both groups:
- Participants will be volunteers between the ages of 18-60.
- Opioid-using group:
- Participants must meet DSM-5 criteria for an opioid use disorder (active or in remission and on maintenance therapy).
- Participants must be currently enrolled in and receiving medication-assisted treatment for opioid use disorder (MOUD; such as methadone, buprenorphine or naltrexone) and report a stable dose of their medication for at least 4 weeks prior to enrollment.\*
- Participants in this group can meet DSM-5 criteria for other substance use disorders (such as alcohol, nicotine, or cocaine use disorder) currently or in the past but must also meet criteria for an OUD.
You may not qualify if:
- An individual who meets any of the following criteria will be excluded from participation in this study:
- Controls:
- Participants cannot meet DSM-5 criteria for current substance use disorders other than nicotine and marijuana and cannot meet criteria for current moderate or severe alcohol use disorder.
- All participants:
- Participants cannot meet DSM-5 criteria for lifetime and/or current psychotic disorders such as bipolar disorder, schizophrenia, schizoaffective disorder.
- Participants cannot have a history of major head trauma resulting in cognitive impairment, seizure, or other neurological disorders.
- Participants cannot have any history of significant neurological disorders, including seizures, epilepsy, or cognitive impairment which may impact MRI metrics. MAI will use discretion in evaluating the impact of minor events or history reported.
- Participants cannot be pregnant.
- Participants with Major Depressive Disorder (per DSM-V criteria) must be stable on medication(s) for 3 months.
- Subjects with suicidal ideation where outpatient treatment is determined unsafe.
- Subjects that cannot speak English. Justification: To include non-English speakers, we would have to translate the consent and other study documents and hire and train bilingual staff, which would require resources that we do not have and could not justify, given the small sample size for each experiment. Additionally, the data integrity of some of the cognitive tasks and standardized questionnaires used in this study would be compromised as they have only been validated in English. Most importantly, ongoing communication regarding safety procedures is necessary when participants are undergoing MRI procedures. The inability to effectively communicate MRI safety procedures in a language other than English could compromise the safety of non-English speaking participants.
- Any contraindications to MRI.
- For subjects continuing to the TMS portion of the protocol, contraindications for TMS.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
National Institute on Drug Abuse
Baltimore, Maryland, 21224, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Amy C Janes, Ph.D.
National Institute on Drug Abuse (NIDA)
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- NIH
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 23, 2024
First Posted
August 29, 2024
Study Start (Estimated)
April 21, 2026
Primary Completion (Estimated)
August 6, 2027
Study Completion (Estimated)
August 6, 2027
Last Updated
April 16, 2026
Record last verified: 2026-03-03
Data Sharing
- IPD Sharing
- Will share
Some information collected under this protocol may be placed into one or more scientific databases after it has been stripped of identifiers such as name, so that it may be used for future research on any topic and shared broadly for research purposes. A researcher who wants to study the information must apply to the database and be approved. Researchers with an approved study may be able to see and use the data from this protocol, along with that from many other studies. We do not expect any direct benefits for participants resulting from the use of protocol data and information, though new discoveries that may help other people could occur. The Principal Investigator is open to answering any participant questions about how these data may be used.