"electromyography" 的定义和意义

What is "electromyography"?

Electromyography (EMG) is a test that measures the electrical activity in muscles and nerves. During the test, small sensors called electrodes are placed on the skin or inserted into the muscle. These electrodes identify electrical signals produced by muscle activity, which are then recorded and displayed on a screen or printed on paper. EMG is used to diagnose muscle and nerve disorders, such as muscle weakness or nerve damage, by showing how well the muscles and nerves are working.