Electromyography (EMG) is a diagnostic test administered to people who may be experiencing muscle or nerve pain, including cramping, tingling, numbness, or weakness. An EMG involves needle electrodes inserted into the muscle being tested. The test is used to measure electrical activity in particular muscles when contracted. The test is also used to identify whether electrical activity is present when it shouldn’t be (that is, when the muscle is at rest). An EMG can identify whether the ... [Read More]