- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03777137
The Effect of Transcutaneous Magnetic Stimulation on Acute Pain.
Investigation of the Effect of Transcranial Magnetic Stimulation of Several Sites in the Brain Upon Experimental Pain
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
After subjects contact the office to express interest in being involved with this protocol, subjects will take the telephone screening questionnaire. Those who meet inclusion criteria with no exclusions will come for first visit. At this visit, subjects will discuss and sign the consent form, and have a one sequence MRI scan which is used to localize sites in the brain to be stimulated with TMS.
The subjects will then have four visits at intervals of two weeks; each visit will have TMS intervention designated (SITE1), (SITE2), (SITE3), and (SITE4). TMS will be applied each of four sites (SITE1, SITE2, SITE3, and SITE4) which will be randomly assigned among stimulation sites Medial Frontal (MF), Dorsolateral Frontal (DL), Primary Motor Cortex (M1 and superior Interparietal sulcus (Sham) and counterbalanced across subjects (see Diagram below).
During each of visits 2 to 5, the participant will undergo baseline Quantitative Sensory Testing (QST), followed by TMS stimulation and then by repeat QST. QST will consist of pain thresholds for cutaneous hot stimuli. Visits 2 through 5 will last for approximately 1 hour each and will occur at two-week intervals. The total study duration will be 50 days for each subject. Study enrollment will last for three years and total study duration will be four years.
Study Type
Contacts and Locations
Study Locations
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Maryland
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Baltimore, Maryland, United States, 21212
- Hopkiins Functional Neurosurgery Lab
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Healthy man or woman 18-80 years of age;
- Possess the ability to understand study procedures and comply with them for the entire length of the study;
- Women of childbearing age must use contraception for duration of study.
Exclusion Criteria:
- History of diagnosis of heart disease, increased intracranial pressure, or structural abnormalities of the brain (e.g. tumor);
- History of epilepsy, seizure disorder, neurologic disease, cranial trauma or head surgery, or implanted hardware (including cardiac pacemakers, cardiac lines, medication pumps, or stimulators);
- Family history of seizures;
- Presence of metal anywhere deep to or on the skull (excluding the mouth);
- Any current or recent (<6 weeks) or planned (within duration of study period) use of any of the following medications: imipramine, amitriptyline, doxepin, nortriptyline, maprotiline, chlorpromazine, clozapine, foscarnet, ganciclovir, ritonavir, amphetamines, ketamine, gamma-hydroxybutyrate (GHB), and theophylline;
- History of peripheral neuropathy, e.g. Diabetic Neuropathy;
- Women who are pregnant or women of childbearing capacity who may become pregnant (i.e. not using contraception);
- Volunteers with communication disorders or non-English speakers;
- Current drug or alcohol use or dependence that, in the opinion of the investigators, would interfere with adherence to study requirements.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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TMS during heat pain stimuli
This is a single institution, single-blinded, long-term exploratory study using participant as his/her own control to evaluate and compare the analgesic effect of experimental heat pain of TMS during early versus late times on a vigilance behaviors toward pain (CPT, Continuous Performance Task).
Vigilance behaviors include errors, reaction times and activation.
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Volunteers will take a telephone screening questionnaire and those meeting inclusion criteria will attend their first visit.
Those signing the consent will have a T1 weighted MRI scan to localize sites in the brain to be stimulated with TMS.
The subjects will then have four visits at intervals of two weeks; each visit will have a TMS intervention including SITE1, SITE2, SITE3, and SITE4.
The sequence of the testing TMS four different visits (SITE1 to SITE4) will be randomly assigned among stimulation sites Medial Frontal (MF), Dorsal Lateral Frontal (DL), Primary motor cortex (M1) and Interparietal Sulcus (Sham) and counterbalanced across subjects (see Diagram below).
During each of visits 2 to 5, each participant will undergo baseline Quantitative Sensory Testing (QST), followed by a TMS intervention, and then by repeat QST.
QST will consist of pain thresholds for contact heat.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Contact Heat Pain Temperature Threshold Change
Time Frame: Entire duration of study, approximately five years
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The contact heat thermal thermode will be used to measure heat pain thresholds (in degrees centigrade) before and after each stimulation site.
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Entire duration of study, approximately five years
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Frederick Lenz, Department of Neurosurgery, JHU
Publications and helpful links
General Publications
- . Lenz FA, Casey KL, Jones EG, Willis WD, The human pain system: experimental and clinical perspectives. Cambridge, UK ; New York: Cambridge University Press; 2010.
Study record dates
Study Major Dates
Study Start (ANTICIPATED)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- NA_00084600
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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