Sakata E, Shimura H, Sakai S, Shimura M
Auris Nasus Larynx. 1984;11(1):1-9. doi: 10.1016/s0385-8146(84)80011-5.
Analysis of the optokinetic nystagmus has been one of the most important means to examine the function of the vestibulo-oculomotor system. Especially in Japan, it has been used as a mean to analyze the function of the brain stem. We investigated directional preponderance of the optokinetic nystagmus in supratentorial lesions especially unilateral lesions, in the cerebral hemisphere which had been nearly neglected as an object for investigation of the vestibular system. We examined 30 cases of unilateral lesion in the cerebral hemisphere. In all cases CT-scan confirmed that these lesions have no mass effect which might affect the function of the surrounding brain. It was also confirmed that these cases had no spontaneous nystagmus. These cases consisted of 11 cerebral infarctions, 9 cerebral thrombosis, 6 cerebral hemorrhages and 4 cerebral contusions. In the result, 27 cases showed directional preponderance of the optokinetic nystagmus to the ipsilateral side, while there was none to the contralateral side. Three cases showed no directional preponderance. Some cases showed marked inhibition of optokinetic nystagmus of the contralateral side. These markedly inhibited cases are very similar to cases of pontine lesion which usually manifest marked inhibition of the optokinetic nystagmus to the ipsilateral side.
视动性眼震分析一直是检查前庭眼动系统功能的最重要手段之一。特别是在日本，它已被用作分析脑干功能的一种方法。我们研究了幕上病变尤其是单侧病变时视动性眼震的优势方向，而大脑半球作为前庭系统的研究对象几乎被忽视。我们检查了30例大脑半球单侧病变的病例。所有病例的CT扫描均证实这些病变没有可能影响周围脑组织功能的占位效应。还证实这些病例没有自发性眼震。这些病例包括11例脑梗死、9例脑血栓形成、6例脑出血和4例脑挫伤。结果显示，27例视动性眼震优势方向为同侧，对侧无优势方向。3例无优势方向。部分病例对侧视动性眼震明显抑制。这些明显受抑制的病例与桥脑病变的病例非常相似，桥脑病变通常表现为同侧视动性眼震明显抑制。
