Brain Control of Bimanual (Both Hands) Movements

Completed

Conditions studied: Healthy

In brief

This study will use magnetic resonance imaging (MRI) to investigate how the brain controls bimanual movements (movements of both hands). Healthy normal volunteers between 21 and 65 years of age may be eligible for this study. Participants will have a medical history, physical and neurological examinations, and will complete a questionnaire before and after testing. The study consists of two parts: 1) finger movement training and 2) magnetic resonance imaging, as follows: Part 1 - Finger movement training Participants will train to do three different finger movements using the index finger of both hands. The fingers will be taped to a device that measures their movement. The movements are: * Lifting and dropping the index fingers of each hand repetitively and in synchrony (starting and stopping at the same time). The amplitude of finger movements is the same for both hands. * Lifting and dropping the index fingers of each hand repetitively and in synchrony, but with a different amplitude for each hand. * Lifting and dropping of the index finger of each hand repetitively, but each with a different amplitude and not in synchrony. Part 2 - Magnetic resonance imaging Participants will perform the trained movements during MRI scanning. This diagnostic procedure uses a magnetic field and radio waves to produce images of brain structure and activity. For MRI, 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.

Key facts

Study ID

NCT00029302

Run by

National Institute of Neurological Disorders and Stroke (NINDS)

People needed

40

Starts

2001-12-10

Expected to finish

2008-12-24

Last updated by the study team

2017-07-02

Who can join

Age: 21 and older, up to 75. Sex: any. Healthy volunteers: not accepted.

You may not qualify if…

• Normal subjects younger than 21 years and older than 75 will also be excluded from the study since development and decline in movement performance and the associated brain activation is out of the scope of the present study.
• Normal subjects with MRI findings consistent with organic brain lesions such as brain tumors, stroke, trauma or AVMs will be excluded.
• Normal subjects with a history of significant medical disorders such as cancers, or requiring continuous treatment with drugs will be excluded.
• Subjects with mental disorders will be excluded.
• 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 24 hours prior to functional MRI scan. Pregnant women will not be excluded from the EEG arm of this protocol.

Where it is running

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

Full record on ClinicalTrials.gov

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