Effects of rTMS on Human Brain Activity

NCT ID: NCT04242810

Last Updated: 2022-01-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

WITHDRAWN

Clinical Phase

NA

Study Classification

INTERVENTIONAL

Study Start Date

2021-12-31

Study Completion Date

2021-12-31

Brief Summary

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The purpose of this study is to investigate how repetitive transcranial magnetic stimulation (rTMS) affects brain networks measured by functional magnetic resonance imaging (fMRI).

Participants will undergo a screening that includes a psychiatric and medical history screening, TMS and MRI safety screening, and urine screening. If participants pass the screening procedure, they will be introduced to transcranial magnetic stimulation (TMS), magnetic resonance imaging (MRI), and a task that involves viewing words, sentences, or pictures. There will be up to seven visits and each visit will take less than 3 hours.

MRI can be dangerous for people that have medical devices, metal objects, or metal debris in their bodies. TMS procedures are associated with a very low risk of seizures, "muscle-tension" type headache, ear damage, numbness of the face, fainting, dizziness, memory impairment, trouble concentrating, and acute mood changes. This study will use only levels of TMS that are within safety guidelines. There is also a risk of potential loss of confidentiality.

Detailed Description

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Conditions

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Repetitive Transcranial Magnetic Stimulation (rTMS)

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants

Study Groups

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Active rTMS

rTMS applied over memory task-based brain target

Group Type ACTIVE_COMPARATOR

rTMS

Intervention Type DEVICE

TMS will be applied over task-based target at an intensity up of 130% rMT. The optimal coil placement during stimulation will be guided using the BrainSight neuronavigation system.

MRI scan

Intervention Type PROCEDURE

Participants will undergo an MRI scan directly after rTMS stimulation that will last less than 120 minutes. During the scan, subjects will encode and retrieve object pictures.

Sham rTMS

Sham rTMS applied over memory task-based brain target

Group Type PLACEBO_COMPARATOR

Sham rTMS

Intervention Type DEVICE

An electrical sham coil that produces the same auditory and somatosensory stimulations, without a significant magnetic field, will be used as an active control.

MRI scan

Intervention Type PROCEDURE

Participants will undergo an MRI scan directly after rTMS stimulation that will last less than 120 minutes. During the scan, subjects will encode and retrieve object pictures.

Interventions

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rTMS

TMS will be applied over task-based target at an intensity up of 130% rMT. The optimal coil placement during stimulation will be guided using the BrainSight neuronavigation system.

Intervention Type DEVICE

Sham rTMS

An electrical sham coil that produces the same auditory and somatosensory stimulations, without a significant magnetic field, will be used as an active control.

Intervention Type DEVICE

MRI scan

Participants will undergo an MRI scan directly after rTMS stimulation that will last less than 120 minutes. During the scan, subjects will encode and retrieve object pictures.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Age restrictions: between 18-35 years old
* Use of effective method of birth control for women of childbearing capacity.
* Willing to provide informed consent.

Exclusion Criteria

* Current or recent (within the past 6 months) substance abuse or dependence, excluding nicotine and caffeine (urine test)
* Current serious medical illness (self-report)
* History of seizure except those therapeutically induced by ECT (childhood febrile seizures are acceptable and these subjects may be included in the study), history of epilepsy in self or first degree relatives, stroke, brain surgery, head injury, cranial metal implants, known structural brain lesion, devices that may be affected by rTMS or MRI (pacemaker, medication pump, cochlear implant, implanted brain stimulator)
* Subjects are unable or unwilling to give informed consent
* Diagnosed any Axis I DSM-IV disorder (MINI, DSM-IV)

Subjects with a clinically defined neurological disorder including, but not limited to:

* Any condition likely to be associated with increased intracranial pressure
* Space occupying brain lesion.
* History of stroke.
* Transient ischemic attack within two years.
* Cerebral aneurysm.
* Dementia.
* Parkinson's disease.
* Huntington's disease.
* Multiple sclerosis.
* Increased risk of seizure for any reason, including prior diagnosis of increased intracranial pressure (such as after large infarctions or trauma), or currently taking medication that lowers the seizure threshold
* Subjects with cochlear implants
* Subjects not willing to tolerate the confinement associated with being in the MRI scanner
* Women who are pregnant or breast-feeding (urine test)
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Duke University

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Robert Cabeza

Role: PRINCIPAL_INVESTIGATOR

Duke University

Locations

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Duke University

Durham, North Carolina, United States

Site Status

Countries

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United States

Other Identifiers

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Pro00102980

Identifier Type: -

Identifier Source: org_study_id

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