嘈杂肌腱电刺激对超现实互动适应性的影响

Maki Ogawa;Keigo Matsumoto;Kazuma Aoyama;Takuji Narumi
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摘要

虚拟现实(VR)实现了超越物理限制的超真实交互(BRI),提供了有效的用户体验,例如伸出手来抓住远处的物体。然而,适应新的BRI映射往往会降低性能和体现感。为了解决这个问题,我们建议使用噪声肌腱电刺激(n-TES)来降低本体感觉的精度。先前的研究表明,减弱本体感觉的精确性对感觉-运动适应至关重要。因此,我们假设n-TES可以增强用户对BRI的适应,而n-TES已经被证明可以降低VR中的本体感觉精度并诱导视觉依赖感知。我们使用go-go交互(一种用于与远处物体交互的BRI技术)进行了一项用户研究,以评估n-TES的效果。考虑到n-TES反应的个体差异,参与者首先进行本体感觉精度测试,以确定将本体感觉精度从5个水平(σ = 0.25 - 1.25 mA)降低的最佳刺激强度。使用2x2参与者内设计来评估go-go互动和n-TES对表现、主观任务负荷和体现的影响。24名参与者的结果显示,go-go互动增加了到达时间和任务负荷,同时降低了化身感。与我们的假设相反,n-TES并没有显著减轻go-go互动的大多数负面影响,除了在go-go互动中n-TES的感知代理更高。n-TES的有限有效性可能是由于参与者在任务过程中的习惯化或感觉适应。未来的研究应考虑对“一带一路”的适应过程,并研究不同的“一带一路”情景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Proprioceptive Attenuation with Noisy Tendon Electrical Stimulation on Adaptation to Beyond-Real Interaction
Virtual reality (VR) enables beyond-real interactions (BRI) that transcend physical constraints, offering effective user experiences like extending a hand to grasp distant objects. However, adapting to novel mappings of BRI often reduces performance and the sense of embodiment. To address this, we propose using noisy tendon electrical stimulation (n-TES) to decrease proprioceptive precision. Previous studies have suggested that attenuating proprioceptive precision is crucial for sensory-motor adaptations. Thus, we hypothesize that n-TES, which has been shown to reduce proprioceptive precision and induce visual-dependent perception in VR, can enhance user adaptation to BRI. We conducted a user study using go-go interaction, a BRI technique for interacting with distant objects, to assess the effects of n-TES. Given the individual variability in n-TES response, participants first underwent a proprioceptive precision test to determine the optimal stimulation intensity to lower the proprioceptive precision from 5 levels $(\sigma=0.25-125\text{mA})$. Reaching tasks using a 2x2 within-participants design evaluated the effects of go-go interaction and n-TES on performance, subjective task load, and embodiment. Results from 24 participants showed that go-go interaction increased reaching time and task load while decreasing the sense of embodiment. Contrary to our hypothesis, n-TES did not significantly mitigate most of these negative effects of go-go interaction, except that perceived agency was higher with n-TES during go-go interaction. The limited effectiveness of n-TES may be due to participants' habituation or sensory adaptation during the tasks. Future research should consider the adaptation process to BRI and investigate different BRI scenarios.
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