Magnetic Stimulation of the Human Nervous System

Status Completed

Clinical Trial Summary

Transcranial Magnetic Stimulation (TMS) is a non-invasive technique to gather information about brain function. It is very useful when studying the areas of the brain related to motor activity (motor cortex, corticospinal tract, spinal cord and nerve roots). The procedure is conducted by transmitting a magnetic signal into the brain to stimulate an area of the body. Electrodes (small pieces of metal taped to areas of the body) are used in order to measure electrical activity. A magnetic signal is sent from a metal instrument held close to the patient's head, to an area of the brain responsible for motor activity of a certain area of the body. The electrodes pick up and record the electrical activity in the muscles.

This study will employ the use of TMS to diagnose neurological disorders that affect the motor cortex or the corticospinal tract. Normal subjects are sometimes studied to investigate normal activity of the nervous system and to train doctors in clinical neurophysiology and electrodiagnostic medicine at the National Institutes of Health (NIH).

Clinical Trial Description

This protocol outlines the use of magnetic stimulation as a diagnostic tool in patients with suspected dysfunction of central motor pathways or nerve roots and as a tool to localize and characterize suspected corticospinal abnormalities in neurologic disorders and systemic disorders with neurological manifestations. The protocol is intended for clinical use.

Transcranial magnetic stimulation has been used for diagnosis of neurologic disorders since 1987. The principles of magnetic stimulation and its use for diagnosis are described in current textbooks of clinical neurophysiology as a routine procedure and should be included in the training program for fellows in clinical neurophysiology and electrodiagnostic medicine at NIH.

The magnetic stimuli are to be given as single or paired pulses at repetition rates less than 1 per second. ;

Study Design

N/A

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00001780
Study type	Observational
Source	National Institutes of Health Clinical Center (CC)
Contact
Status	Completed
Phase	N/A
Start date	February 1998
Completion date	November 2005

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.