Enhancement of Use-Dependent Plasticity by Somatosensory Stimulation in Chronic Stroke
|First Received Date ICMJE||December 27, 2001|
|Last Updated Date||March 3, 2008|
|Start Date ICMJE||December 2001|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE||Not Provided|
|Original Primary Outcome Measures ICMJE||Not Provided|
|Change History||Complete list of historical versions of study NCT00028379 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||Enhancement of Use-Dependent Plasticity by Somatosensory Stimulation in Chronic Stroke|
|Official Title ICMJE||Enhancement of Use-Dependent Plasticity by Somatosensory Stimulation in Chronic Stroke|
Recent studies have demonstrated that electrical stimulation delivered over the skin increases the muscle strength as measured by a dynamometer in chronic stroke patients. We recently also found out that such stimulation enhances the ability of healthy brains to learn faster, enhancing the beneficial effects of the motor training.
The purpose of this study is to find out if this stimulation can enhance the ability of stroke patients to experience plastic changes in the brain. It may aid in the development of new strategies for rehabilitation after brain injury in the future.
A clinical and neurological exam will be administered. Each patient will participate in three different sessions separated by at least 48 hours: a 2-hour peripheral nerve stimulation to the weak hand, a 2-hour peripheral nerve stimulation to the leg, and no stimulation. The sessions will be randomly ordered. A magnetic resonance imaging scan of the brain will be done as well.
Nerve stimulation will be done by transcranial magnetic stimulation (TMS). In TMS, the head is immobilized within a frame. An insulated coil wire is placed on the scalp and brief electrical current passed through it. Participants may be asked to perform movements, do simple tasks, or simply tense muscles. Electrical activity of the muscles will be recorded with a computer. Some experiments may be recorded on videotape.
Participants must be stroke patients who have recovered to the point of being able to make thumb movements, and the stroke must have occurred more than 6 months ago.
There are very few therapeutic options for the treatment of motor disabilities resulting from chronic stroke. Motor training results in use-dependent plasticity, thought to underlie recovery of motor function after cortical lesions. We recently demonstrated that stimulation of peripheral nerves (SPN) administered in association with motor training enhances use-dependent plasticity in healthy volunteers. The purpose of this protocol is to investigate if SPN administered in association with motor training enhances use-dependent plasticity in patients with chronic stroke. If so, it may become an important tool to enhance the beneficial effects of rehabilitative treatment in this patient group.
|Study Type ICMJE||Interventional|
|Study Phase||Not Provided|
|Study Design ICMJE||Not Provided|
|Condition ICMJE||Cerebrovascular Accident|
|Intervention ICMJE||Procedure: Transcranial magnetic stimulation (TMS)|
|Study Arm (s)||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Completion Date||November 2005|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
Hemiparetic patients (right or left who had thromboembolic non-hemorrhagic infarction (documented by CT or MRI) more than 6 months before. Patients should have recovered motor function to the point of being able to perform thumb movements.
Patients will be recruited from referrals from the community, particularly Baltimore and Washington VA hospitals, and Suburban Hospital as well as stroke clubs. An anatomical MRI scan will be acquired at the NIH if a recent one (within 6 months) is not available.
|Accepts Healthy Volunteers||No|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Location Countries ICMJE||United States|
|NCT Number ICMJE||NCT00028379|
|Other Study ID Numbers ICMJE||020082, 02-N-0082|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||National Institute of Neurological Disorders and Stroke (NINDS)|
|Collaborators ICMJE||Not Provided|
|Investigators ICMJE||Not Provided|
|Information Provided By||National Institutes of Health Clinical Center (CC)|
|Verification Date||November 2005|
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