HCC: Small: Determining the Effects of Latency in Virtual Reality Physical Rehabilitation

HCC：小：确定虚拟现实物理康复中延迟的影响

• 批准号: 1218283
• 负责人: John Quarles
• 金额: $ 47.28万
• 依托单位: University of Texas at San Antonio
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1218283&HistoricalAwards=false
• 关键词: HCC; Small; Determining; Effects; Latency

Although the effect of latency (i.e., how quickly a system can respond to user input) on users has been one of the fundamental research areas in virtual reality (VR) for many years, latency's effect on persons with physical disabilities is still unknown. The PI's objective in this project is to acquire a better understanding of how latency of visual feedback in VR can impact interaction performance, perception, and subjective experience for users with reaction time and reflex deficits (e.g., due to neurological, vestibular, balance issues), and to investigate how this ultimately impacts the effectiveness of VR-based rehabilitation. The PI's central hypothesis, based on preliminary data, is that latency will be less perceivable but will have a more significant impact on interaction performance for persons with disabilities as compared to healthy persons. To test this hypothesis, the PI will focus on the main set of applications typically used in VR rehabilitation: games, exercise, and accessibility. He will explore, for members of the target community, latency's impact in VR rehabilitation games, on the effectiveness of visual feedback during rehabilitation exercises in virtual environments (VE), and on accessibility in a VE. Through a series of empirical studies, the PI will determine latency thresholds in VR with respect to interaction performance, physiological response, perception, and subjective impressions. Broader Impacts: Project outcomes will afford a deeper understanding of the effectiveness of VR as a medium for rehabilitation. If the PI's hypothesis is confirmed, the potentially negative implications for the efficacy of VR-based rehabilitation may disrupt accepted theories and revolutionize design guidelines for this type of rehabilitation. Alternatively, this research may inspire other researchers to develop approaches to combat latency in VR specifically for disabled persons, which will also produce further vertical advancement in the field. More generally, this research will provide a critical step towards the grand challenge of universal usability in VR.

尽管延迟的影响（即系统能够响应用户输入的速度）对用户的响应多年来一直是虚拟现实（VR）的基本研究领域之一，但延迟对身体残疾患者的影响仍然未知。 PI在该项目中的目标是更好地了解VR视觉反馈的潜伏期如何影响具有反应时间和反射缺陷的用户（例如，由于神经学，前庭，平衡问题）的用户的交互作用，感知和主观经验，并研究如何最终影响VR基于VR的康复能力。 PI基于初步数据的中心假设是，与健康人相比，潜伏期的可感知程度较低，但对残疾人的互动绩效产生更大的影响。 为了检验这一假设，PI将重点关注VR康复通常使用的主要应用程序集：游戏，练习和可访问性。 对于目标社区的成员，他将探索潜伏在VR康复游戏中的影响，对虚拟环境（VE）康复练习期间视觉反馈的有效性以及VE中的可及性。 通过一系列实证研究，PI将在VR中确定相互作用性能，生理反应，感知和主观印象的潜伏阈值。 更广泛的影响：项目成果将对VR作为康复媒介的有效性有更深入的了解。 如果证实了PI的假设，则对基于VR的康复疗效的疗效的潜在负面影响可能会破坏公认的理论，并彻底改变了此类康复的设计指南。 另外，这项研究可能会激发其他研究人员为与残疾人专门针对VR的潜伏期打击潜伏期的方法，这也将在该领域产生进一步的垂直进步。 更普遍地，这项研究将为VR普遍可用性的巨大挑战提供关键的一步。