Electromyogram (EMG)

You will be asked to lie down or sit on a chair, depending on the area being tested. A thin, one-use electrode needle is inserted into the muscle. The needle contains a wire that is attached to a measuring monitor. You'll be asked to tighten then relax the muscle. The electrical activity is recorded on the monitor.

The electrode may be moved several times to ensure the activity is accurately recorded. The test lasts for about an hour and you may feel a repetitive tapping or tingling sensation. When the test is done, any electrodes are removed and the area will be cleaned.

For the test you should remove any jewellery, as this will make it easier to attach the electrodes. You should also wear a top with short sleeves and a skirt or loose trousers. Avoid using any skin creams before the test.

You may eat and drink normally beforehand, and it might also be helpful to bring a list of your current medications with you.