Long-Term Improvement in Motor Learning by Transcranial Direct Current Stimulation
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT00314769|
Recruitment Status : Completed
First Posted : April 14, 2006
Last Update Posted : October 6, 2017
This study will examine whether continuous use of transcranial direct current stimulation (tDCS) in combination with motor training can lead to long-term improvement in movement performance beyond what can be achieved with motor training alone.
Healthy normal volunteers 18-80 years of age who are clearly right- or left-handed may be eligible for this study. Each candidate is screened with a medical history, clinical and neurological examination, questionnaires to evaluate memory, attention, and handedness and a brain MRI, if one has not been done by NINDS within 12 months of entering the study. Pregnant women may not participate.
The study involves 10 sessions (in addition to the screening visit) over 3 months. Sessions 1-5 are completed over 5 consecutive days. Sessions 6-10 are divided over the remaining time. Participants are randomly assigned to one of three groups: 1) tDCS during motor training; 2) tDCS after training; or 3) training with sham tDCS. During these sessions, participants perform a pinch force task (squeezing a small device between the thumb and forefinger) and visuomotor tasks (using a device to move the cursor on a computer screen to various targets and holding the cursor in place for 1 second).
During the motor training and performance sessions, participants have the following procedures.
- TMS measurements: A wire coil is held on the scalp, and a brief electrical current is passed through the coil, creating a magnetic pulse that stimulates the brain. During the stimulation, the subject may be asked to tense certain muscles slightly or perform other simple actions. The stimulation may cause a twitch in muscles of the face, arm, or leg, and the subject may hear a click and feel a pulling sensation on the skin under the coil.
- tDCS: Small, wet sponge electrodes are applied to the head - one above the eye and the other on the back of the head. A small electrical current is passed between them. The subject may feel an itching or tingling sensation under the electrodes or see light flashes. Some sessions are done with sham tDCS.
- Surface electromyography: Electrodes are filled with a conductive gel and taped to the skin over one small hand muscle to measure the electrical activity of muscles.
- Behavioral measurements: Evaluation of learned movement tasks
- Questionnaires to evaluate the subject's attention, fatigue and mood before and after testing
|Condition or disease|
Show Detailed Description
|Study Type :||Observational|
|Actual Enrollment :||196 participants|
|Official Title:||Long-Term Improvement in Training Effects by Transcranial DC Stimulation|
|Study Start Date :||April 7, 2006|
|Estimated Study Completion Date :||December 16, 2013|
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00314769
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|
|Principal Investigator:||Leonardo G Cohen, M.D.||National Institute of Neurological Disorders and Stroke (NINDS)|