In most cases, your doctor will perform both elements, but in some situations, only one or the other may be done. Each needle has a microscopic electrode that picks up both the normal and abnormal electrical signals given off by a muscle. Needle exam for muscle testing – Very fine needles are inserted into several muscles.Nerve conduction study – The nerves are stimulated at different points with small electric shocks, artificially activating them so their function can be measured.
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.