Kamei T, Iizuka T, Matsuzaki M
Department of Otolaryngology, Gunma University School of Medicine, Maebashi, Japan.
Eur Arch Otorhinolaryngol. 1997;254 Suppl 1:S58-60. doi: 10.1007/BF02439725.
We conducted a trial to determine whether or not head-shaking nystagmus (HSN) was influenced by lateral head tilting. Twenty-two patients with unilateral peripheral vestibular lesions were examined between July 1990 and June 1996. All of the patients were found to have horizontal HSN following horizontal head shaking in the upright head position. Eye movements were recorded by electronystagmography with the eyes open in complete darkness. Patients voluntarily tilted their heads to the lateral head positions with the assistance of the examiner as quickly as possible immediately after head shaking in the upright head position. Findings showed that monophasic horizontal HSN and the first phase of biphasic horizontal HSN were suppressed by lateral head tilting. The second phase of biphasic horizontal HSN was influenced differently by head tilting when compared with the first phase. Vertical (down-beating) components in horizontal HSN may appear in the peripheral vestibular lesions, but seem to have no definite relation to head positions.
我们进行了一项试验，以确定摇头性眼球震颤（HSN）是否受头部向一侧倾斜的影响。1990年7月至1996年6月期间，对22例单侧外周前庭病变患者进行了检查。所有患者在直立位头部水平摇头时均出现水平性HSN。在完全黑暗环境中睁眼时，通过眼震电图记录眼动。患者在直立位头部摇头后，在检查者协助下尽快主动将头向一侧倾斜。结果显示，向一侧头部倾斜可抑制单相水平性HSN和双相水平性HSN的第一相。与第一相相比，双相水平性HSN的第二相受头部倾斜的影响不同。水平性HSN中的垂直（向下跳动）成分可能出现在外周前庭病变中，但似乎与头部位置没有明确关系。
