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Study of Brain Control of Movement

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ClinicalTrials.gov Identifier: NCT00017979
Recruitment Status : Completed
First Posted : June 25, 2001
Last Update Posted : March 4, 2008
Information provided by:

Study Description
Brief Summary:

This study will use transcranial magnetic stimulation to examine how the brain controls movement by sending messages to the spinal cord and muscles and what goes wrong with this process in disease. Normal healthy volunteers between the ages of 18 and 65 years may be eligible to participate.

In transcranial magnetic stimulation, an insulated wire coil is placed on the subject's scalp or skin. Brief electrical currents are passed through the coil, creating magnetic pulses that stimulate the brain. During the stimulation, participants will be asked to tense certain muscles slightly or perform other simple actions. The electrical activity of the muscle will be recorded on a computer through electrodes applied to the skin over the muscle. In most cases, the study will last less than 3 hours.

Condition or disease
Movement Disorder Healthy

Detailed Description:
The purpose of this study is to investigate the influence of voluntary inhibition of movement, using either negative motor imagery or Go/NoGo reaction task, on cortical inhibitory mechanisms. Intracortical inhibition (ICI) and silent period (SP) are two major cortical inhibitory mechanisms demonstrated by transcranial magnetic stimulation (TMS). Alterations in these inhibitory mechanisms have been extensively studied in various situations, but the influence of voluntary inhibition has not been elucidated yet. In normal volunteers, therefore, we plan to determine if voluntary inhibition of movement influences these cortical inhibitory mechanisms. The primary outcome measures would be any changes in motor evoked potential (MEP) size and intracortical inhibition (ICI) parameters.

Study Design

Study Type : Observational
Estimated Enrollment : 30 participants
Official Title: Effect of Volitional Inhibition on Cortical Inhibitory Mechanisms
Study Start Date : June 2001
Estimated Study Completion Date : June 2002
Groups and Cohorts

Outcome Measures

Eligibility Criteria

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Volunteers who are greater than or equal to 18 years old.

Subjects must not have any medico-surgical illness.

Subjects must not have neurological illness.

Subjects must not have psychiatric illness.

Subjects must not be taking any medication with potential

influence on nervous system function.

Subjects must not have a pacemaker.

Subjects must not have an implanted medical pump.

Subjects must not have a metal plate or a metal object in the skull or eye.

Subjects must not have a history of seizure disorder.

Contacts and Locations

Information from the National Library of Medicine

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): NCT00017979

United States, Maryland
National Institute of Neurological Disorders and Stroke (NINDS)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institute of Neurological Disorders and Stroke (NINDS)
More Information

ClinicalTrials.gov Identifier: NCT00017979     History of Changes
Other Study ID Numbers: 010200
First Posted: June 25, 2001    Key Record Dates
Last Update Posted: March 4, 2008
Last Verified: June 2002

Keywords provided by National Institutes of Health Clinical Center (CC):
Transcranial Magnetic Stimulation
Motor Cortex
Motor Imagery
Reaction Time
Cerebral Inhibition
Healthy Volunteer
Normal Control

Additional relevant MeSH terms:
Movement Disorders
Central Nervous System Diseases
Nervous System Diseases