No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
Healthy Volunteers Welcome
You do not need to have the condition being studied to take part.
Ready to participate?
Review the details below, then apply to join this clinical trial.
At a Glance
Age
18 – 65
Sex
Any
Study type
Interventional
Purpose
Basic Science
Participants needed
97 (estimated)
Sponsor
Jing Jiang · Other
Who this trial is looking for
This trial is looking for adults with depression or anxiety, as well as healthy individuals to help researchers understand brain activity. Participants will undergo tests and brain scans while receiving a non-invasive brain stimulation treatment.
Are You a Good Fit for This Trial?
Rules you outHeart diseaseNeurological disordersSignificant traumatic brain injury
You may be able to join if
I am between 18 and 65 years old.
I can understand and consent to participate in research.
I speak English.
I have been diagnosed with major depressive disorder.
You may not be able to join if
I am under 18 or over 65 years old.
I have epilepsy or a seizure disorder.
I have an implanted device in my body that is not MRI-compatible.
I have metal in my body, like shrapnel.
I have uncontrolled high blood pressure.
I am pregnant.
I refuse to abstain from illicit drug use during the study.
I refuse to abstain from alcohol within 24 hours of scans.
Summarized in plain language from this trial's official eligibility criteria.
The full criteria are further down this page — only the research team can
confirm whether you qualify.
Think this trial could be right for you?
Answer three quick questions written from this study's own rules to see if you may qualify. No account needed to find out.
The goal of this clinical trial is to examine the neural mechanisms underlying transcranial magnetic stimulation (TMS) using concurrent functional magnetic resonance imaging (fMRI) in both healthy controls (HCs) and patients with high negative affect symptoms, such as depression. Approximately half male and half female participants aged 18-65 will be recruited.
The main questions it aims to answe…
The goal of this clinical trial is to examine the neural mechanisms underlying transcranial magnetic stimulation (TMS) using concurrent functional magnetic resonance imaging (fMRI) in both healthy controls (HCs) and patients with high negative affect symptoms, such as depression. Approximately half male and half female participants aged 18-65 will be recruited.
The main questions it aims to answer are:
1. Is the acute/transient effect induced by single-pulse TMS related to the long-term modulatory effect induced by repetitive TMS (rTMS)?
2. Do any of these effects predict negative affect symptoms, such as depression?
Participants will:
1. Complete several tests to assess their cognitive abilities and emotional states
2. Undergo several brain scans, including resting-state fMRI, structural MRI, diffusion tensor imaging (DTI), and task fMRI
3. Have two different types of TMS sequences, single-pulse and repetitive pulses, administered to specific brain regions while undergoing fMRI
Trial Locations
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Eligibility Criteria
Inclusion for patients:
* Diagnosis of major depressive disorder
* Age greater than or equal to 18 years
* Age less than or equal to 65 years
* Able to understand and consent for research participation
* English-speaking
Inclusion for healthy controls:
* Report no lifetime psychiatric diagnosis a…
Inclusion for patients:
* Diagnosis of major depressive disorder
* Age greater than or equal to 18 years
* Age less than or equal to 65 years
* Able to understand and consent for research participation
* English-speaking
Inclusion for healthy controls:
* Report no lifetime psychiatric diagnosis and treatment
* scores on Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder Questionnaire (GAD-7) lower than 4
* Age greater than or equal to 18 years
* Age less than or equal to 65 years
* Able to understand and consent for research participation
* English-speaking
Exclusion for all subjects:
* Age less than 18 years
* Age greater than 65 years
* With epilepsy or seizure disorder
* With implanted ferromagnetic equipment in their face or skull near the stimulation target
MRI Exclusion criteria for all subjects:
* Implanted device including pacemaker, coronary stent, defibrillator, or neurostimulation device that is not MRI-compatible
* Metal in body including bullets, shrapnel, metal slivers
* Claustrophobia
* Uncontrolled high blood pressure
* Blood circulation problems
* Opiate medication, antihypertensive medication, or any medication that interferes with blood flow (interferes with fMRI recordings)
* Significant heart disease, such as atrial fibrillation
* Pregnancy in female participants
* Prior exposure to deep brain stimulation, rTMS, or tDCS (transcranial direct current stimulation) therapies
* History of neurological or cardiovascular disorders, brain surgery, radiation treatment, brain hemorrhage or tumor, stroke, or diabetes
* Significant traumatic brain injury (loss of consciousness, post-injury amnesia, significant radiological/neurological findings, penetrating brain injury)
* Refusal to abstain from illicit drug use for duration of the study
* Refusal to abstain from alcohol within 24 hours of scans
If you would like to participate in the study, click this link to fill out the Screening Form: https://redcap.icts.uiowa.edu/redcap/surveys/?s=DEYHWF8TMCHHW4Y7. Kindly note that our research team will contact you directly only if you meet the eligibility criteria for the study. Due to the high volume of responses, we are unable to reply to individual inquiries or provide feedback about eligibility decisions.
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