Physiatrists are experts in electrodiagnostic medicine, the study of diseases of the nerves and muscles. The electrodiagnostic test (EDX) consists of two parts, the nerve conduction study (NCS) and the electromyography (EMG).

The NCS assesses nerve function by applying a small electrical shock to the nerve and recording the response. The shock is a mild, quick, tingling sensation. Typically, several nerves are evaluated during a test. The EMG provides complimentary information and involves assessing, ordinarily, several muscles with a small, thin, disposable needle. The test usually lasts 30-60 minutes.

There are no activity restrictions prior to testing and normal activities, including driving, may be resumed afterward. You may eat, drink, and take your medications as normal. Test preparation includes taking a shower or bath to remove skin oils. Lotions, creams, and body oils should NOT be applied on the day of testing. Blood thinners, bleeding disorders, and pacemakers are not contraindications to testing, but make sure the physician is informed.