Vestibulo-ocular reflex modification after virtual environment exposure.
Vestibulo-ocular reflex modification after virtual environment exposure.
复制标题
虚拟环境暴露后前庭眼反射的改变。
DOI：
10.1080/000164801300043541
复制
发表时间：
2001
影响因子：
1.4
通讯作者：
F. Ottaviani
中科院分区：
文献类型：
--
作者：
S. Di Girolamo;P. Picciotti;B. Sergi;W. Di Nardo;G. Paludetti;F. Ottaviani
通过虚拟现实 (VR)，可以沉浸在虚幻的世界中，其中环境感知通过人工感官刺激进行修改。 VR 在影响前庭系统的病理评估和康复方面的应用，无论是在诊断还是护理方面，都可能代表一个有趣的新研究方向。我们对现实的感知实际上是基于我们的感官感知到的静态和动态空间信息。在虚拟环境中头部运动期间，显示器上的图像和相对于头部角加速度的迷宫信息不同，因此存在视觉前庭冲突。众所周知，视觉和迷路信息之间的不匹配可能会改变前庭动眼反射（VOR）增益。我们研究了 20 名健康受试者（平均年龄 25 岁）佩戴头戴式显示器暴露于虚拟环境 20 分钟后的浸泡后变化。 VOR 增益和相位通过 VR 暴露前、结束时和 30 分钟后黑暗中的谐波正弦刺激进行测量。在 VR 暴露结束时，所有受试者都观察到 VOR 增益减少，30 分钟后消失。我们的数据表明，暴露在虚拟环境中可能会导致 VOR 增益的临时修改。这一发现可用于对 VOR 增益进行人工、仪器修改，从而为前庭疾病的评估和康复开辟新的视角。
Immersion in an illusory world is possible by means of virtual reality (VR), where environmental perception is modified by artificial sensorial stimulation. The application of VR for the assessment and rehabilitation of pathologies affecting the vestibular system, in terms of both diagnosis and care, could represent an interesting new line of research. Our perception of reality is in fact based on static and dynamic spatial information perceived by our senses. During head movements in a virtual environment the images on the display and the labyrinthine information relative to the head angular accelerations differ and therefore a visuo-vestibular conflict is present. It is known that mismatches between visual and labyrinthine information may modify the vestibulo-oculomotor reflex (VOR) gain. We studied the post-immersion modifications in 20 healthy subjects (mean age 25 years) exposed to a virtual environment for 20 min by wearing a head-mounted display. VOR gain and phase were measured by means of harmonic sinusoidal stimulation in the dark before, at the end of and 30 min after VR exposure. A VOR gain reduction was observed in all subjects at the end of VR exposure which disappeared after 30 min. Our data show that exposure to a virtual environment can induce a temporary modification of the VOR gain. This finding can be employed to enable an artificial, instrumental modification of the VOR gain and therefore opens up new perspectives in the assessment and rehabilitation of vestibular diseases.