A sample piece of a<unk>  is cut from an affected area. The three different types of<unk> es each employ a slightly different procedure. For each procedure, the patient is given a local anesthetic to numb the area to be operated on. The patient remains conscious throughout the procedure. The surgeon makes a small incision and removes part of the<unk>  before closing the incision. Once the<unk>  has been removed, it is sent to a laboratory for examination.
Nerve biopsy
Nerve conduction study
Myelography
Muscle biopsy
Cervicography
Electromyography
Magnetic resonance myelography
Optomyography