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HealthyNCT04926961

Testing the Contribution of Orbitofrontal Cortex Networks to Reward Identity Learning

A study testing Real transcranial magnetic stimulation (TMS) in people with Healthy, run by Northwestern University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This research study examines the contribution of orbitofrontal cortex (OFC) networks to learning reward identity expectations. Read more about this study

Who is it for?
Ages 18 to 50 yearsHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
Real transcranial magnetic stimulation (TMS)
Type of treatment
Medical device
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
42 participants
Where
1 siteUnited States
Study dates
16 Jun 2021to 3 Nov 2021
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 50 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Age between 18 and 50 years old
  • Right-handed
  • Fluent English speakers

Who cannot join

  • History of significant neurological conditions (e.g., epilepsy, dementia, multiple sclerosis, brain tumors, etc.)
  • History of major psychiatric conditions (e.g., general anxiety disorder, depression, schizophrenia, obsessive-compulsive disorder, post-traumatic stress disorder, attention deficit hyperactivity disorder, alcoholism, etc.)
  • Significant medical illnesses (e.g., cancer, meningitis, chronic obstructive pulmonary disease, cardiovascular disease, etc.)
  • Significant cerebrovascular risk factors (e.g., hypertension, diabetes, elevated cholesterol, etc.)
  • Current use of psychoactive medications (e.g., barbiturates, benzodiazepines, chloral hydrate, haloperidol, lithium, carbamazepine, phenytoin, citalopram, escitalopram, fluoxetine, diazepam, etc.)
  • Smell or taste dysfunction
Show all 20Show fewer
  • History of significant allergies requiring hospitalization for treatment
  • History of severe asthma requiring hospitalization for treatment
  • Habitual smoking
  • Magnetic implants (e.g., shunts or stents, aneurysm clips, surgical clips, cochlear implants, metal bone/joint pins, plates and screws, eyelid spring or wires, etc.)
  • Electronic devices (e.g., implanted cardiac defibrillator, cardiac pacemaker, deep brain/spinal cord or nerve stimulator, internal electrodes/wires, medication infusion devices, etc.)
  • History of metal working without proper eye protection, or injury with metal shrapnel or metal slivers
  • Claustrophobia
  • Pregnancy
  • Predisposition to seizures (e.g., personal history of seizures, family history of seizures epilepsy, pregnancy, alcoholism, etc.)
  • Use of medications that increase the likelihood of seizures (e.g., bupropion, citalopram, duloxetine, ketamine, gamma-hydroxybutyrate, etc.)
  • History of surgical procedures performed on the brain or spinal cord
  • History of severe head trauma followed by loss of consciousness
  • History of fainting spells or syncope
  • Hearing problems or tinnitus

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Northwestern University

    Chicago, Illinois, 60611

Other trials in United States

About this study

This research study examines the contribution of orbitofrontal cortex (OFC) networks to learning reward identity expectations.

Read the detailed description

This study is designed to examine the contribution of OFC networks to reward identity learning. It will use network-targeted TMS to test whether OFC is necessary for reward identity learning. Healthy human subjects will perform a three-reward reversal learning task after either TMS or sham stimulation while fMRI data are acquired. This is a randomized, within-subject, cross-over study.

Conditions
Healthy
Being tested
Sham transcranial magnetic stimulation (TMS), Real transcranial magnetic stimulation (TMS)

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Sham transcranial magnetic stimulation (TMS)Device

    Sham TMS will be applied using the MagVenture MagPro X100 stimulator with the placebo side of the Cool-B65 A/P coil.

  • Real transcranial magnetic stimulation (TMS)Device

    Real TMS will be applied using the MagVenture MagPro X100 stimulator with the active side of the Cool-B65 A/P coil.

Study groups in NCT04926961
Study groupRoleWhat they receive
Sham stimulation first, then real stimulationExperimentalParticipants will first be delivered sham TMS stimulation. Then on a separate day, participants will be delivered real TMS stimulation.
Receives: Device: Sham transcranial magnetic stimulation (TMS); Device: Real transcranial magnetic stimulation (TMS)
Real stimulation first, then sham stimulationExperimentalParticipants will first be delivered real TMS stimulation. Then on a separate day, participants will be delivered sham TMS stimulation.
Receives: Device: Sham transcranial magnetic stimulation (TMS); Device: Real transcranial magnetic stimulation (TMS)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of correct outcome predictions

    Percentage of correct outcome predictions in response to predictive cues during the reversal learning task.

    Measured: 1 hour

  2. Blood oxygen level-dependent (BOLD) responses

    Blood oxygen level-dependent (BOLD) responses measured using functional magnetic resonance imaging (fMRI) during the reversal learning task.

    Measured: 1 hour

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Jun 2021
  2. Study start16 Jun 2021
  3. Primary completion3 Nov 2021
  4. Study completion3 Nov 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Crossover
Model description
Participants receive both sham TMS stimulation and real TMS stimulation in different sessions.
Masking
Single blind
Who is masked
Participant
Enrolment
42 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04926961
Sponsor's protocol ID
STU00214694
Status last verified
Jun 2025
First submitted
9 Jun 2021
Last updated
17 Jun 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: All data that underlie results in a publication

Questions about this trial

What is this clinical trial studying?

A study testing Real transcranial magnetic stimulation (TMS) in people with Healthy, run by Northwestern University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 20 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of correct outcome predictions (time frame: 1 hour). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Jun 2025.

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