ELECTRONYSTAGMOGRAPHY (ENG) is not new, but has been used for more than 40 years, since described by Schott in 1922.1 Initially used by ophthalmologists, the technique was used extensively by otolaryngologists in Europe and to a lesser extent in the United States. A new impetus was given by the recommended and very important monograph of the Swedish authors, Aschan et al in 1956.2 This paper advocated the use of the technique for routine clinical vestibular examination, and has triggered an increased interest, which is now felt in many parts of America. The classical technique utilizes the corneo-retinal potential, which in humans is produced by a positive charge on the cornea and a negative charge on the retina. This potential varies in amplitude from person to person and is affected by factors such as visual acuity and illumination.3 If electrodes are placed at the outer canthi of the
STROUD MH. Electronystagmography. Arch Otolaryngol. 1966;84(6):638–640. doi:https://doi.org/10.1001/archotol.1966.00760030640009
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: