Jefferson University Hospitals

Laryngeal Electromyography (LEMG)

Laryngeal electromyography is an in-office test that provides diagnostic information about the neuromuscular function of the vocal cords.

The otolaryngologists of the Jefferson Voice and Swallowing Center may sometimes request this test in order to help diagnose a voice problem. This test is typically arranged in conjunction with Jefferson neurologists.

What Does Laryngeal Electromyography Involve?

During a LEMG, electrodes (special fine needles) will measure electrical activity during muscle activity while you perform various vocal tasks for each muscle tested. Your activity will then be evaluated by the Center staff in order to reach a diagnosis and help guide treatment strategies.