The tolerance for visual feedback distortions in a virtual environment
The tolerance for visual feedback distortions in a virtual environment
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DOI：
10.1016/s0031-9384(02)00914-9
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发表时间：
2002-12-01
影响因子：
2.9
通讯作者：
Klatzky, RL
中科院分区：
文献类型：
--
作者：
Matsuoka, Y;Allin, SJ;Klatzky, RL
我们感兴趣的是使用一个虚拟环境与机器人设备，以延长从中风恢复的人的力量和流动性，引导他们超越他们认为他们有能力做的事情。在此之前，我们确定了在虚拟环境中手指的力产生和位置位移的可察觉差异（JND）。在本文中，我们扩展了这一调查，确定人们的容忍力的生产和位置位移的视觉表示在虚拟环境中的扭曲。我们确定，受试者是不能够可靠地检测不准确的视觉表示，直到有36%的失真。实际和感知运动之间的这种差异明显大于过去报告的JND，这表明虚拟机器人环境可能是一种有价值的工具，用于引导实际运动进一步远离感知运动。我们相信这种扭曲的情况可能会让中风后的恢复者，即使是那些有知觉或认知缺陷的人，更容易康复。(C)2002年爱思唯尔科技有限公司All rights reserved.
We are interested in using a virtual environment with a robotic device to extend the strength and mobility of people recovering from strokes by steering them beyond what they had thought they were capable of doing. Previously, we identified just noticeable differences (JND) of a finger's force production and position displacement in a virtual environment. In this paper, we extend this investigation by identifying peoples' tolerance for distortions of visual representations of force production and positional displacement in a virtual environment. We determined that subjects are not capable of reliably detecting inaccuracies in visual representation until there is 36% distortion. This discrepancy between actual and perceived movements is significantly larger than the JNDs reported in the past, indicating that a virtual robotic environment could be a valuable tool for steering actual movements further away from perceived movements. We believe this distorted condition may allow people recovering from strokes, even those who have perceptual or cognitive deficits, to rehabilitate with greater ease. (C) 2002 Elsevier Science Inc. All rights reserved.