Back in the mid-1980s, some of us were asked by the otologists in our departments of otolaryngology to perform electroneurography measurement of patients with facial nerve paralysis. The etiology of the facial nerve disorder was often temporal bone fracture or Bell's palsy. Although most of us already had access to equipment for recording electrophysiological responses evoked by electrical stimulation, we needed to quickly learn more about and master technically this new procedure. Audiologists still are sometimes asked to evaluate facial nerve function (really degeneration) in selected patients. Here you have access to a brief article I coauthored with my friend and colleague Doug Beck describing ENoG. You'll find a more detailed review of the topic in chapter 15 (Electrically evoked and myogenic responses) in my New Handbook of Auditory Evoked Responses.