Masucci E F, Fabara J A, Saini N, Kurtzke J F
Ann Ophthalmol. 1981 Oct;13(10):1123-7.
A patient had periodic alternating Ping-Pong gaze and massive bilateral ischemic cerebral infarction proved at autopsy. In previous cases, bilateral hemisphere involvement appears to have been common in most cases. Eye movements in Ping-Pong gaze are similar to the slow-eye movements seen in sleep, anesthesia, and other obtunded states, a result of disinhibition of inherent rhythms in the oculovestibular system. They are like release phenomena and appear whenever fixational ability is lost or suspended, and during full consciousness they are inhibited by supranuclear cortical mechanisms. Ping-Pong gaze represents a distinct third variety of periodic alternating gaze disturbance, and the differential diagnostic features between it and periodic alternating gaze deviation and periodic alternating nystagmus are discussed.
一名患者出现周期性交替性乒乓球样凝视，尸检证实存在大面积双侧缺血性脑梗死。在之前的病例中，大多数情况下双侧半球受累似乎很常见。乒乓球样凝视中的眼球运动类似于睡眠、麻醉和其他意识模糊状态下出现的慢眼球运动，这是眼前庭系统固有节律去抑制的结果。它们类似于释放现象，只要注视能力丧失或暂停就会出现，并且在完全清醒时会被核上皮质机制抑制。乒乓球样凝视代表了一种独特的周期性交替性凝视障碍的第三种类型，并讨论了它与周期性交替性凝视偏斜和周期性交替性眼球震颤之间的鉴别诊断特征。
