Electromyography is a technique for evaluating and recording the electrical activity produced by skeletal muscles. EMG is performed using an instrument called an electromyograph to produce a record called an electromyogram.
Electromyography (EMG) is a diagnostic treatment to assess the health of muscles and the nerve cells that control them (motor neurons). EMG outcomes can reveal nerve dysfunction, muscle dysfunction or problems with nerve-to-muscle signal transmission.
Motor nerve cells transfer electrical signals that trigger muscles to contract. An EMG uses small gadgets called electrodes to equate these signals into graphs, sounds or numerical values that are then interpreted by a professional.
During a needle EMG, a needle electrode inserted directly into a muscle records the electrical activity because muscle.
A nerve conduction study, another part of an EMG, utilizes electrode stickers applied to the skin (surface electrodes) to measure the speed and strength of signals taking a trip between 2 or more points.
Your doctor may order an EMG if you have signs or symptoms that may indicate a nerve or muscle disorder. Such symptoms may include:
When you’re in pain, your quality of life decreases dramatically – and every aspect of your everyday life is impacted. Just because you have a condition that causes pain, it doesn’t mean you have to live with the pain day in and day out. The pain management specialists at the Minnesota Pain Institute in Bloomington, MN can help you get relief.
• Muscle disorders, such as muscular dystrophy or polymyositis
• Diseases affecting the connection between the nerve and the muscle, such as myasthenia gravis
• Disorders of nerves outside the spinal cord (peripheral nerves), such as carpal tunnel syndrome or peripheral neuropathies
• Disorders that affect the motor neurons in the brain or spinal cord, such as amyotrophic lateral sclerosis or polio
• Disorders that affect the nerve root, such as a herniated disk in the spine