正常方波急跳。

Normal square wave jerks.

作者信息

Herishanu Y O, Sharpe J A

出版信息

Invest Ophthalmol Vis Sci. 1981 Feb;20(2):268-72.

PMID:7461930

Abstract

Fixation stability of the saccadic system was investigated by infrared reflection oculography in 29 normal subjects, young and elderly. Square wave jerks consisting of spontaneous horizontal saccadic excursions of 0.5 degree and over, followed some 200 msec later by corrective saccades, were recorded in 24% of subjects. The frequency of square wave jerks in the elderly was significantly higher than in young subjects. The results suggest that square wave jerks more frequent than 9/min in young patients can be considered abnormal.

摘要

通过红外反射眼动描记术对29名正常受试者（包括年轻人和老年人）的眼球运动系统的固定稳定性进行了研究。在24%的受试者中记录到了方波急跳，其由0.5度及以上的自发性水平眼球快速移动组成，约200毫秒后跟随矫正性眼球快速移动。老年人中方波急跳的频率显著高于年轻人。结果表明，年轻患者中方波急跳频率超过9次/分钟可被视为异常。