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Interhemispheric Plasticity in Humans
NCT00120666 · View on ClinicalTrials.gov ↗
Study Summary
This study will determine how the brain controls movements by sending messages to the spinal cord and muscles. Researchers want to know if strengthening a hand muscle will increase the strength of the same muscle in the other hand, and if these changes happen in the brain or spine, or both. Plasticity in this study refers to the capacity for continuous changes of the neural pathways in the brain and nervous system. Researchers have seen cases in which using a muscle extensively (force production) in one muscle group has increased the strength of the same muscle group on the opposite side of the body (force transfer). This situation happens without the unused muscle becoming larger-suggesting that the practice causes changes in some parts of the brain or spine. It is vital for scientists to know how this effect works, so that they can create new rehabilitation methods for people who cannot move or who have difficulty moving one side of their body. Patients ages 18 to 60 who are in good health and who do not have a history of major conditions affecting the bones, joints or nervous system may be eligible for this study. Patients will undergo a medical examination. There will be 1 or 2 testing sessions, 20 training sessions, and 1 or 2 final testing sessions, with patients being asked to come to the laboratory for as few as 4 times (about 10 hours total) or for up to 25 visits (about 20 hours total). The investigator will indicate which of six different groups that a patient is selected for. During testing sessions, the strength of the pointer and little fingers in each hand will be determined through the use of very brief electrical pulses. There also will be transcranial magnetic stimulation (TMS) and 1 Hz TMS. The researchers will place one or two wire coils on the patient's scalp and make marks on the scalp which will be removed at the end of the session. During the TMS, a brief electrical current is passed through the coil, creating a magnetic pulse that stimulat
Conditions Studied
Study Locations (1)
Maryland
- National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 108 participants |
| Start Date | 2005-07-08 |
| Est. Completion | 2007-06-25 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00120666
The ClinicalTrials.gov registry entry for NCT00120666 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 108 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is National Institute of Neurological Disorders and Stroke (NINDS), which has 339 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Healthy appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00120666 reports 1 study location spanning 1 distinct geographic area — top geographies include Maryland. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00120666 about?
NCT00120666 is a clinical study titled "Interhemispheric Plasticity in Humans". This study will determine how the brain controls movements by sending messages to the spinal cord and muscles. Researchers want to know if strengthening a hand muscle will increase the strength of the same muscle in the other hand, and if these changes happen in the brain or spine, or both. Plastici...
What is the current status of trial NCT00120666?
This trial is currently completed. The enrollment target is 108 participants. The study started on 2005-07-08. Estimated completion is 2007-06-25.
What conditions does trial NCT00120666 study?
This clinical trial studies the following conditions: Healthy. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT00120666?
This trial is sponsored by National Institute of Neurological Disorders and Stroke (NINDS), which has 339 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00120666 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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