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James T. Benitez, MD

Arch Otolaryngol. 1967;86(5):588-589.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

CLINICIANS using electronystagmography (ENG) for evaluation of vestibular function, should have instruments that are portable, not expansive, simple to operate, and provide recordings with minimal drifting and artifacts. Obviously the stimulus to induce nystagmus must remain constant from patient to patient. With this purpose the following equipment has been designed.

Two Channel ENG Recorder (Fig 1).— It has the following basic features: (1) selfcontained portable unit; (2) direct and velocity nystagmus channel requiring no external amplification; (3) pushbutton paper speed control (2.5, 5, 10, 20 mm/sec); (4) time marker (1 sec) and audio indicator; (5) external event marker; (6) automatic room "lights out" marker; (7) pushbutton ink primer; (8) z-fold paper; (9) nystagmus velocity fast/slow selector switch; and (10) biopotential electrodes.

The direct channel of the recorder displays eye position or direct nystagmus. The second channel, the velocity of the nystagmus. By means of a selector switch, one can . . . [Full Text PDF of this Article]

Author Affiliations
Detroit

From the Department of Otolaryngology, Wayne State University School of Medicine, Detroit.

Footnotes
Accepted for publication Jan 10, 1967.

Read before the 71st Annual Meeting of the American Academy of Ophthalmology and Otolaryngology, Oct 16-21, 1966, Chicago.

Reprint requests to 1400 Chrysler Freeway, Detroit 48207 (Dr. Benitez).

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