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Electromyography (EMG)
An EMG (Electromyography) is a medical test that measures the electrical activity of muscles, helping diagnose neuromuscular conditions and assess muscle function.
An electromyogram (EMG) is a medical test that measures the electrical activity of muscles and the nerves controlling them. EMGs are used for diagnostic and research purposes to assess the health and functioning of muscles and nerves. During an EMG, a healthcare provider, often a neurologist, places electrodes (usually in the form of small, sterile needles) into the muscles being tested. The electrodes detect and record the electrical signals generated by muscle cells when they contract.
There are two primary components of this investigation:
- Needle EMG (Electromyography)
- Nerve Conduction Studies (NCS)
The combined information from both components of the EMG can help diagnose various neuromuscular conditions, such as muscular dystrophy, myasthenia gravis, amyotrophic lateral sclerosis (ALS), peripheral neuropathy, carpal tunnel syndrome, and many others.