Electromyography

When any activity is performed by the body, the muscles producean electrical current which is proportional to the level of that activity. Electromyography (EMG) is the study of that muscle activity, in much the same way as electrocardiography (ECG) is the study of cardiac activity. There are two basic methods of EMG measurements - intramuscular EMG and surface EMG. The former involves placement of a needle into the muscle to be measured, and is well established in the diagnosis of neuromuscular disorders. The latter involves detection of electrical activity within a muscle by placing electrodes onto the skin directly above the muscle (or muscles) concerned - it is therefore non-invasive, and as such it is relatively quick and simple to take a measurement. Portable and advanced systems are available from several sources including Mega Electronics Ltd and Noraxon USA Inc. MEGA Electronics Ltd.

P.O.Box 1750
Savilahdentie 6
70211
KUOPIO
FINLAND
Tel: +358-(0)17-580 0977
Fax: +358-(0)17-580 0978
Email info@meltd.fi
WWW http://www.meltd.fi/

NORAXON USA, INC.
13430 N. Scottsdale Road,
Suite 104
Scottsdale,
Arizona 85254

Phone: Toll-Free: (800) 364-8985
Scottsdale Office: (602) 443-3413
Fax: (602) 443-4327
Email: sales@noraxon.com
WWW: http://www.noraxon.com/