What is EMG ?
Electromyography (EMG) is a diagnostic procedure for assessing the health of the muscles and nerve cells that control them (motor neurons). Results from electromyography can indicate nerve dysfunction, muscle dysfunction, problems with nerve-to-muscle signal transmission, and other nerve conditions.
What is an EMG machine ?
The nerve cells transmit electrical signals that cause muscles to contract and relax. EMG machine can translate these signals into graphs, sounds or numerical values with the help of electrodes that are then determined by specialists.
During the EMG, the electrode of the EMG needle inserted directly into the muscle records the electrical activity of the muscle.
A nerve conduction study, another part of an electromyography, uses electrodes applied to the skin to measure the signals traveling between two or more points.