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THE ELECTROMYOGRAPHY OR EMG TESTABOUT YOUR NERVOUS SYSTEMYour nervous system uses electrical energy to carry messages smoothly along motor nerves to muscles and along sensory nerves to the brain. Damage to the nervous system can affect how well nerves send these messages.
![]() Dr. Culligan setting up EMG testing.
ABOUT THE ELECTROMYOGRAPHY (EMG) TESTThe EMG test records the electrical activity in muscles. It helps diagnose diseases of the nerves and muscles.The electrode, a tiny needle, is inserted into one muscle at a time to record its electrical activity. It records activity during the insertion, while the muscle is at rest and while the muscle contracts. Your examiner will determine how many muscles need to be tested depending upon your symptoms. ABOUT THE NERVE CONDUCTION TESTUsually the Nerve Conduction Test accompanies an EMG. The test evaluates the health of motor and sensory nerves by recording how well electrical impulses travel along them.Electrodes are placed on your skin. They will detect and record the electrical signal after the impulse travels along the nerve. A stimulating electrode is held against your skin. This sends a small electrical charge along the nerve. You may feel a tingle but this is not harmful. Your examiner will determine how many nerves need to be tested depending upon your symptoms.
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