Measuring the Latency Connectome in the Central Nervous Systems Using Neuroimaging and Neurophysiological Techniques
Public ClinicalTrials.gov record NCT03223636. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Measuring the Latency Connectome in the Central Nervous System Using Neuroimaging and Neurophysiological Techniques
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Little is known about the time it takes for nerve signals to go from one area of the brain to another. Using advanced methods for brain research, researchers want to look at the time it takes to send messages between different brain areas. They also want to develop new tests. Objectives: To develop tests to measure the sizes of nerve fibers in the peripheral nerve system and in the brain. Also to find out the different speeds that information travels in nerve fibers. Eligibility: Healthy, right-handed people ages 18-70 Design: Participants will be screened with medical history and a physical exam. Participants will have up to 7 visits depending on the tests they choose. Visits last about 2-4 hours and may involve the following tests: * Physical exam * Urine tests * Magnetic resonance imaging (MRI). Participants lie on a table that slides into a scanner. They will be in the scanner for up to 1 hour. For some scans, sensors are placed on the skin. They will get earplugs for loud noises. * Small, sticky pads on the skin will electrically stimulate nerves in the forearm. * Transcranial magnetic stimulation (TMS). A wire coil will be held to the scalp. A brief electrical current passes through the coil to affect brain activity. * Electroencephalography. TMS will be given to the brain. Small electrodes on the scalp measure brain activity. Participants may do small tasks. * Electrodes on the scalp will send an electrical current to the brain. * A cone with magnetic detectors will be lowered onto the head to record brain activity. Participants will perform various tasks.
Study identification
- NCT ID
- NCT03223636
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 16 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 70 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 1, 2017
- Primary completion
- Nov 11, 2020
- Completion
- Feb 25, 2021
- Last update posted
- Apr 29, 2021
2017 – 2021
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
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About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03223636, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 29, 2021 · Synced Sep 1, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03223636 live on ClinicalTrials.gov.