Electromyography, also known as EMG, is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons). EMG results can reveal nerve dysfunction, muscle dysfunction or problems with nerve-to-muscle signal transmission.
Motor neurons transmit electrical signals that cause muscles to contract. An EMG uses tiny devices called electrodes to translate these signals into graphs, sounds or numerical values that are then interpreted by a specialist.
During a needle EMG, a needle electrode inserted directly into a muscle records the electrical activity in that muscle.
A nerve conduction study, another part of an EMG, uses electrode stickers applied to the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points.
Your doctor may order electromyography if you have signs or symptoms that may indicate a nerve or muscle disorder. Such symptoms may include:
- Tingling
- Numbness
- Muscle weakness
- Muscle pain or cramping
- Certain types of limb pain
EMG is a low-risk procedure, and complications are rare.
Source: mayoclinic.org
The above information is for general education purposes only. Please ask your doctor specific questions during your visit.
Electromyography, also known as EMG, is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (motor neurons). EMG results can reveal nerve dysfunction, muscle dysfunction or problems with nerve-to-muscle signal transmission.
Motor neurons transmit electrical signals that cause muscles to contract. An EMG uses tiny devices called electrodes to translate these signals into graphs, sounds or numerical values that are then interpreted by a specialist.
During a needle EMG, a needle electrode inserted directly into a muscle records the electrical activity in that muscle.
A nerve conduction study, another part of an EMG, uses electrode stickers applied to the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points.
Your doctor may order electromyography if you have signs or symptoms that may indicate a nerve or muscle disorder. Such symptoms may include:
- Tingling
- Numbness
- Muscle weakness
- Muscle pain or cramping
- Certain types of limb pain
EMG is a low-risk procedure, and complications are rare.
Source: mayoclinic.org
The above information is for general education purposes only. Please ask your doctor specific questions during your visit.
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