An electronystagmography (ENG) test measures your eye movements and the health of your cranial nerves. It is somewhat difficult to perform, and in the United States has largely been replaced by videonystagmography. Electrodes are placed at locations above and below the eye to record electrical. This article outlines my method of performing electro nystagmography (ENG) and achieving consistent, good quality results in an office-based vestibular laboratory. Claussen, a preface, and an introduction. The chapters thereafter discuss the following topics: anatomy and physiology, medical history and physical examination, the fundamentals of ENG.