Taguchi K, Sakaguchi M, Ishiyama T, Sato K
Department of Otolaryngology, Shinshu University School of Medicine, Matsumoto, Japan.
Acta Otolaryngol Suppl. 1997;528:74-6.
The subjective vertical was estimated by using a concentrically movable spotlight-line on a specially devised dome-shaped screen and a controller in patients with unilateral vestibular disorders. The test was performed in a dark room to measure the deviation of the subjective vertical from the true vertical to the earth gravity. The result showed characteristic deviation of the subjective vertical to the affected ear side in most subjects. The relationship between the subjective deviation and body sway was investigated to estimate the clinical significance of the subjective vertical. The locus pattern, area, locus length and the trajectory of head movements while measuring the subjective vertical were recorded. The patterns were centripetal or right-left types, the values of the head movement seemed to be proportional to the magnitude of the subjective vertical. The time course of the subjective vertical depended on the stage of the disorder. Some cases with active vestibular disorders showed directional changes of the subjective vertical deviation depending on the extent of the lesion. The most interesting results were obtained in the relationship between the caloric response and the subjective vertical, suggesting the clinical significance of the subjective vertical in vestibular function.
通过在专门设计的圆顶形屏幕上使用同心可移动的聚光灯线和控制器，对单侧前庭疾病患者的主观垂直感进行评估。测试在暗室中进行，以测量主观垂直方向相对于地球重力真实垂直方向的偏差。结果显示，大多数受试者的主观垂直方向向患侧耳朵出现特征性偏差。研究主观偏差与身体摆动之间的关系，以评估主观垂直感的临床意义。记录测量主观垂直感时头部运动的轨迹模式、面积、轨迹长度和轨迹。模式分为向心型或左右型，头部运动的值似乎与主观垂直感的大小成正比。主观垂直感的时间进程取决于疾病的阶段。一些处于活跃期前庭疾病的病例，主观垂直偏差会根据病变程度出现方向变化。在冷热试验反应与主观垂直感之间的关系中获得了最有趣的结果，这表明主观垂直感在前庭功能中的临床意义。
