NEW APPROACH TO VESTIBULAR TESTING

这一分项目的中心主题是对以下方面的评估 在功能上对正常有意义的前庭功能 受试者和病人。传统的测试不是在自然环境下进行的 条件，因此可能不能反映系统的真实机制。 这一分项目有四个具体目标。首先，角度和线性 前庭-眼睛反射和视觉前庭互动将是 在正常的行走、站立和跑步状态下进行量化 受试者和前庭综合征患者。第二，古怪 将开展耳石功能的旋转测试，结合线性 以俯仰和偏航的角度旋转的加速度。第三，VOR 偏航和俯仰启动都将被评估为功能 前庭试验。第四，发展动态视力测试 作为凝视稳定期间前庭表现的一个指标。磁性 搜索线圈和磁通门传感器将用于精确地 测量眼睛和头部的运动。衰老的影响，外周 前庭缺失和小脑功能障碍将在这些指标上进行评估 条件反射。

The central theme of this subproject is the assessment of aspects of vestibular performance that are functionally significant to normal subjects and patients. Traditional tests are not conducted under natural conditions and thus may not be reflective of the systems true mechanisms. This subproject has four specific aims. First the angular and linear vestibulo-ocular reflexes and visual vestibular interaction will be quantified during walking, standing, and running conditions in normal subjects and patients with vestibular syndromes. Second, eccentric rotation tests of otolithic function will be developed that combine linear acceleration with angular rotations in pitch and yaw. Third, the VOR initiation in both yaw and pitch will be evaluate as a functional vestibular test. Fourth, tests of dynamic visual acuity will be developed as an index of vestibular performance during gaze stabilization. Magnetic search coil and flux gate sensors will be used to make precise measurements of eye and head movements. Effects of aging, peripheral vestibular loss and cerebellar dysfunction will be assessed on these reflexes.