What are electromyography (EMG) and nerve conduction studies?
Electromyography (EMG) and nerve conduction studies are tests that measure the electrical activity of muscles and nerves. Nerves send out electrical signals to make your muscles react in certain ways. As your muscles react, they give off these signals, which can then be measured.
- An EMG test looks at the electrical signals your muscles make when they are at rest and when they are being used.
- A nerve conduction study measures how fast and how well the body’s electrical signals travel down your nerves.
Other names: electrodiagnostic study, EMG test, electromyogram, NCS, nerve conduction velocity, NCV