Comparison of Externally and Self-Initiated Movements
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|ClinicalTrials.gov Identifier: NCT00028197|
Recruitment Status : Completed
First Posted : December 18, 2001
Last Update Posted : March 4, 2008
|First Submitted Date||December 17, 2001|
|First Posted Date||December 18, 2001|
|Last Update Posted Date||March 4, 2008|
|Study Start Date||December 2001|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures||Not Provided|
|Original Primary Outcome Measures||Not Provided|
|Current Secondary Outcome Measures||Not Provided|
|Original Secondary Outcome Measures||Not Provided|
|Current Other Pre-specified Outcome Measures||Not Provided|
|Original Other Pre-specified Outcome Measures||Not Provided|
|Brief Title||Comparison of Externally and Self-Initiated Movements|
|Official Title||Comparison of Externally and Self-Initiated Movements|
This study will use magnetic resonance imaging (MRI) to investigate how the brain controls voluntary movements triggered by an external stimulus or self-initiated.
Registered HCMS healthy normal volunteers may participate. They will complete a questionnaire and will have a medical history and brief physical examination.
The study consists of two parts: 1) body movement training and 2) magnetic resonance imaging, as follows:
Part 1 - Body movement training
Participants will train to do three different body movements involving the hands and feet. The movements will either be self-initiated or in response to a stimulus, such as a visual or auditory trigger.
Part 2 - Magnetic resonance imaging
Participants will do one or more of the trained movements, with or without a triggering stimulus, during MRI scanning. MRI is a diagnostic procedure that uses a magnetic field and radio waves to produce images of brain structure and activity. For the procedure, the subject lies on a stretcher that is moved into the scanner-a cylinder containing a strong magnet. Earplugs are worn to protect the ears from loud thumping noises that occur with electrical switching of radio frequency circuits. Scanning time varies from 20 minutes to 2 hours, with most examinations lasting 1 to 1-1/2 hours. The subject can communicate with the staff person conducting the test at all times during the scan. A device compatible with magnetic resonance will be used to record the participant's body movements. The participant may be asked to push buttons of the device during the tasks.
|Detailed Description||Voluntary movements are divided into two categories, one is externally triggered movement and the other is self-initiated movement. The underlying neural mechanisms in each movement have been investigated, but they are not fully understood. The present study is aimed to understand the neural mechanisms, especially aimed to find out the commonly devoted brain area for the categorized movements. By obtaining functional magnetic resonance imaging (fMRI) signals during triggered movement tasks designed from 3 input triggers of different modalities (visual, auditory, and somatosensory) and 3 output movements of different body parts (right hand, left hand, and right foot), we will determine the brain regions specially devoted for each input or output, and commonly devoted for triggered movements. By obtaining fMRI signals during spontaneous voluntary movement tasks designed from 3 output movements of the same body parts, we will determine the brain regions specially devoted for specific execution and commonly devoted for the voluntarily chosen movements.|
|Study Design||Not Provided|
|Target Follow-Up Duration||Not Provided|
|Sampling Method||Not Provided|
|Study Population||Not Provided|
|Study Groups/Cohorts||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Original Enrollment||Same as current|
|Study Completion Date||November 2005|
|Primary Completion Date||Not Provided|
Normal volunteers will be included. Normal volunteers will be recruited from people who are registered as HMCS Normal Volunteers. All subjects participating in MR studies should have a valid Clinical Center Medical Record Number.
We will not scan pregnant women because safety of high magnetic field to fetus is not established. Therefore, we will administer a urine pregnancy test for any female subjects of childbearing potential prior to functional MRI scan. If the result from a urine pregnancy test is not available for some reason, a medical doctor will judge based on the proper information prior to the scanning.
|Ages||Child, Adult, Older Adult|
|Accepts Healthy Volunteers||Yes|
|Contacts||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries||United States|
|Removed Location Countries|
|Other Study ID Numbers||020068
|Has Data Monitoring Committee||Not Provided|
|U.S. FDA-regulated Product||Not Provided|
|IPD Sharing Statement||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor||National Institute of Neurological Disorders and Stroke (NINDS)|
|PRS Account||National Institutes of Health Clinical Center (CC)|
|Verification Date||November 2005|