Elidan J, Gay I, Lev S
J Otolaryngol. 1984 Dec;13(6):375-81.
Square wave jerks (SWJ) are saccadic eye movements which, when recorded with open eyes are considered to be a pathological sign, caused by fixation instability, and pointing to a central neurological lesion. In reviewing 429 electronystagmographic traces, 85 (20%) were found to include the pattern of SWJ. Among them, in 38 traces, SWJ have been recorded with open eyes during fixation. Many of these cases were found to suffer from definite peripheral vestibular pathology, and some of them did not reveal any sign of neurological pathology in the clinical evaluation and by electronystagmography. Thus, SWJ are non-specific rapid eye movements, which do not necessarily point to neurological pathology. The literature is reviewed and the possible neural mechanism for the production of SWJ is discussed.
方波急跳（SWJ）是一种眼球扫视运动，当睁眼记录时，被认为是一种病理体征，由注视不稳定引起，提示中枢神经系统病变。在回顾429份眼震电图记录时，发现85份（20%）包含方波急跳模式。其中，38份记录中，在注视时睁眼记录到了方波急跳。这些病例中许多被发现患有明确的外周前庭病变，其中一些在临床评估和眼震电图检查中未显示任何神经病理学体征。因此，方波急跳是一种非特异性快速眼球运动，不一定提示神经病理学病变。本文回顾了相关文献并讨论了方波急跳产生的可能神经机制。
