Kudo Y, Kaga K, Ito K, Nakamura M
Department of Otolaryngology, University of Tokyo, Japan.
Acta Otolaryngol Suppl. 1995;520 Pt 2:282-4. doi: 10.3109/00016489509125249.
When a healthy person reads sentences arranged horizontally, the eye movement pattern is a series of regular saccades and rest periods. However, eye movements while patients with oculomotor disturbances are reading remain to be defined. In this study, 4 patients with congenital nystagmus (CN) were studied. Coordinated movements of eye and head are also studied by a new apparatus with terrestrial magnetism sensor. While subjects were reading, an eye movement pattern was superimposed by the CN waveform and showed few rest periods. Eye velocity of less than 4 degrees/s was noted in almost every cycle of the eye movements while the patients with CN were reading. When they were requested to read sentences and simultaneously rotate their head naturally, the head movements had the effect of cancelling the eye instability. This finding may be interpreted as a kind of "eye-head coordination".
当一个健康人阅读水平排列的句子时，眼球运动模式是一系列有规律的扫视和休息期。然而，患有眼球运动障碍的患者在阅读时的眼球运动情况仍有待确定。在本研究中，对4例先天性眼球震颤（CN）患者进行了研究。还使用一种带有地磁传感器的新设备研究了眼和头的协调运动。当受试者阅读时，眼球运动模式叠加有CN波形，且几乎没有休息期。在CN患者阅读时，几乎每个眼球运动周期的眼球速度都低于4度/秒。当要求他们阅读句子并同时自然转动头部时，头部运动起到了消除眼球不稳定的作用。这一发现可被解释为一种“眼-头协调”。
