PDF(Pubmed)
Abstract：
BACKGROUND: Immersive virtual reality (IVR) as a research platform to study human behaviors is an emerging field and may be useful for studying self-care management, especially in the gap between formal healthcare recommendations and day-to-day living. Self-care activities, such as grocery shopping, can be challenging for people with chronic illness. We developed an IVR environment that simulates a real-life grocery store and conducted a usability study to demonstrate the safety and acceptability of IVR as an experimental environment.
METHODS: This study was a three-arm randomized control trial involving 24 participants, conducted as a usability study to evaluate aspects of the experimental condition including the effectiveness of a training exposure, the occurrence of undesirable effects associated with IVR, and participants\' experiences of realism, immersion, and spatial presence. The experiment, using a head mounted device and handheld controllers, included a 10-minute training exposure, followed by one of three unique 30-minute experimental conditions which exposed participants to different combinations of tasks and stimuli, and a post-experience interview. We measured controller errors, undesirable symptoms associated with IVR, and the perception of realism, immersion, and spatial presence.
RESULTS: Participants used controllers effectively to interact within the IVR environment. Hand controller use errors were fewer during the experimental conditions compared to the training exposure. Minimal undesirable IVR symptoms were reported. Presence was rated in the middle range with no significant differences based on experimental condition. Overall, user experience feedback was positive.
CONCLUSIONS: We demonstrated that participants could engage in our IVR environment without excessive error or experiencing undesirable effects and confirmed that the virtual experience attained a level of presence necessary to effectively engage in the study. These findings give us confidence that this IVR intervention designed to explore instrumental activities of daily living is safe, effective and provides a credible, controlled simulated community-like setting.
METHODS: This study was a three-arm randomized control trial involving 24 participants, conducted as a usability study to evaluate aspects of the experimental condition including the effectiveness of a training exposure, the occurrence of undesirable effects associated with IVR, and participants\' experiences of realism, immersion, and spatial presence. The experiment, using a head mounted device and handheld controllers, included a 10-minute training exposure, followed by one of three unique 30-minute experimental conditions which exposed participants to different combinations of tasks and stimuli, and a post-experience interview. We measured controller errors, undesirable symptoms associated with IVR, and the perception of realism, immersion, and spatial presence.
RESULTS: Participants used controllers effectively to interact within the IVR environment. Hand controller use errors were fewer during the experimental conditions compared to the training exposure. Minimal undesirable IVR symptoms were reported. Presence was rated in the middle range with no significant differences based on experimental condition. Overall, user experience feedback was positive.
CONCLUSIONS: We demonstrated that participants could engage in our IVR environment without excessive error or experiencing undesirable effects and confirmed that the virtual experience attained a level of presence necessary to effectively engage in the study. These findings give us confidence that this IVR intervention designed to explore instrumental activities of daily living is safe, effective and provides a credible, controlled simulated community-like setting.
摘要：
背景：沉浸式虚拟现实（IVR）作为研究人类行为的研究平台是一个新兴领域，可能对研究自我护理管理有用，特别是在正式的医疗保健建议和日常生活之间的差距。自我保健活动,比如杂货店购物，对于患有慢性疾病的人来说可能是具有挑战性的。我们开发了一个模拟现实杂货店的IVR环境，并进行了可用性研究，以证明IVR作为实验环境的安全性和可接受性。
方法：这项研究是一项三臂随机对照试验，涉及24名参与者，作为可用性研究进行，以评估实验条件的各个方面，包括训练暴露的有效性，与IVR相关的不良影响的发生，和参与者的现实主义经验，沉浸,和空间存在。实验,使用头戴式设备和手持控制器，包括10分钟的训练曝光，随后是三个独特的30分钟实验条件之一，使参与者暴露于不同的任务和刺激组合，和经验后面试。我们测量了控制器误差，与IVR相关的不良症状，以及对现实主义的感知，沉浸,和空间存在。
结果：参与者有效地使用控制器在IVR环境中进行交互。与训练暴露相比，在实验条件下手动控制器的使用错误更少。报告了最少的不良IVR症状。存在被评级为在中间范围内,没有基于实验条件的显著差异。总的来说,用户体验反馈是积极的。
结论：我们证明了参与者可以参与我们的IVR环境，而不会出现过多的错误或不良的影响，并确认虚拟体验达到了有效参与研究所必需的存在水平。这些发现使我们相信，这种旨在探索日常生活工具活动的IVR干预措施是安全的，有效并提供了一个可信的，控制模拟社区设置。
方法：这项研究是一项三臂随机对照试验，涉及24名参与者，作为可用性研究进行，以评估实验条件的各个方面，包括训练暴露的有效性，与IVR相关的不良影响的发生，和参与者的现实主义经验，沉浸,和空间存在。实验,使用头戴式设备和手持控制器，包括10分钟的训练曝光，随后是三个独特的30分钟实验条件之一，使参与者暴露于不同的任务和刺激组合，和经验后面试。我们测量了控制器误差，与IVR相关的不良症状，以及对现实主义的感知，沉浸,和空间存在。
结果：参与者有效地使用控制器在IVR环境中进行交互。与训练暴露相比，在实验条件下手动控制器的使用错误更少。报告了最少的不良IVR症状。存在被评级为在中间范围内,没有基于实验条件的显著差异。总的来说,用户体验反馈是积极的。
结论：我们证明了参与者可以参与我们的IVR环境，而不会出现过多的错误或不良的影响，并确认虚拟体验达到了有效参与研究所必需的存在水平。这些发现使我们相信，这种旨在探索日常生活工具活动的IVR干预措施是安全的，有效并提供了一个可信的，控制模拟社区设置。
