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Shigeharu Yamanobe, MD; Shinichi Taira, MD; Tetsushi Morizono, MD; Toshiaki Yagi, MD; Tomokazu Kamio, MD

Arch Otolaryngol Head Neck Surg. 1990;116(3):338-341.

Abstract
• A new technique for an eye movement analysis system utilizing infrared video recording and a computerized image recognition method is presented. The system consists of an infrared lighting apparatus, a very small infrared video charge-coupled device camera, a video tape recorder, an analogue-digital converter, and microcomputers. This system makes it possible to simultaneously analyze the slow-phase velocity quantitatively not only of the horizontal and vertical but also of the rotatory components of the energy-induced nystagmus. The maximum slow-phase velocity of the rotatory component of energy-induced nystagmus was found to be 4.1° per second on an average in this study.

(Arch Otolaryngol Head Neck Surg. 1990;116:338-341)

Author Affiliations
From the Department of Otorhinolaryngology, Nippon Medical School (Drs Yamanobe, Taira, Morizono, and Yagi), and Kamio Memorial Hospital (Dr Kamio), Tokyo, Japan.

Footnotes
Accepted for publication September 19, 1989.

Reprint requests to Department of Otorhinolaryngology, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo 113, Japan (Dr Yagi).

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