A theory for treating dizziness due to optical flow (visual vertigo).
A theory for treating dizziness due to optical flow (visual vertigo).
复制标题
治疗光流引起的头晕（视觉眩晕）的理论。
DOI：
10.1089/cpb.2007.0075
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Hain,TimonthyC
中科院分区：
文献类型：
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作者：
Chang,Chih-Pei;Hain,TimonthyC
提供光流刺激和视觉前庭冲突的虚拟现实（VR）训练已被建议作为治疗具有不适当视觉依赖（有时称为视觉眩晕，即使旋转感觉通常不存在）的患者的一种方法。我们提出了一个简单的框架，基于一个假设，即头晕的程度取决于光流的不稳定效应和稳定效应之间的抵消在视野中的静止物体。我们定义了一个总失稳势（TDP），它是失稳效应与稳定效应的比值。该方法是通过可以被描述为用于前庭康复的传统注视稳定练习的逆的练习来逐渐增加人对较高TDP的耐受性。该理论提出，虚拟现实训练的一个重要组成部分是结合一个固定的锚，以帮助同步视觉感官前庭和体感输入。该方案也可以经济地采用计算机生成的图像，或供个人在某些日常环境中使用。
Virtual reality (VR) training that provides optic flow stimuli and visuo-vestibular conflict has been suggested as a way to treat patients with inappropriate visual dependence (sometimes called visual vertigo even though spinning sensation is often absent). We propose a simple framework based on a hypothesis that the degree of dizziness depends on the offsetting between the destabilizing effect of optical flow and the stabilizing effect provided by stationary objects in the visual field. We define a total destabilizing potential (TDP), which is the ratio of the destabilizing effect over the stabilizing effect. The approach is to gradually increase the person's tolerance of a higher TDP through exercises that may be described as an inverse of the traditional gaze stabilization exercises for vestibular rehabilitation. The theory proposes that an important ingredient in VR training is to incorporate a stationary anchor to help synchronizing the visual sensory to vestibular and somatosensory inputs. The scheme can also be adopted economically with computer-generated imagery or used by individuals in certain everyday environments.