An EMG nerve test can provide your doctor with specific information about the extent of nerve and/or muscle injury and can also determine the exact location of injury and give some indication whether the damage is reversible. It is commonly performed by a physiatrist or neurologist with special training for this procedure. What you should know before an EMG test?Įlectromyography (EMG) is a form of electrodiagnostic testing that is used to study nerve and muscle function.What are the side effects of EMG testing?.Why does my doctor want me to have an EMG test?.