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arXiv 2504.08056cs.HC
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虚拟现实中时间感知的脑信号特征

Brain Signatures of Time Perception in Virtual Reality

Sahar Niknam, Saravanakumar Duraisamy, Jean Botev, Luis A. Leiva

AI总结:

本研究利用EEG探索VR中时间感知的神经关联,发现高估、正确估计和低估三种状态具有跨个体和跨条件稳定的频谱特征,可用于监测和主动调节VR时间感知以提升沉浸感。

摘要:

在虚拟现实(VR)中实现高水平的沉浸感与适应性,需要精确测量和表征用户状态。虽然诸如移动和姿态等外在物理特征可以被实时准确追踪,但可靠地捕捉心理状态则更具挑战性。定量心理学允许考虑更内在的特征,如情绪、注意力或认知负荷。尤其是时间感知,与用户的心理状态(包括压力、专注和无聊)密切相关。然而,关于客观测量我们感知时间流逝速度的研究十分稀缺。在本工作中,我们探究了脑电图(EEG)作为VR中时间感知客观测量手段的潜力,通过振荡响应和时频分析探索神经关联。为此,我们在VR中实现了多种时间感知调节器,采集了EEG记录,并将其标记为高估、正确估计和低估三种时间感知状态。我们发现这三种状态具有清晰的EEG频谱特征,且这些特征在不同个体、不同调节器以及不同调节持续时间之间保持一致。这些特征可以被整合并应用于监测和主动影响VR中的时间感知,从而允许虚拟环境被有目的地适配于个体,以进一步增强沉浸感并改善用户体验。本文的免费副本及所有补充材料可在 https://vrarlab.uni.lu/pub/brain-signatures 获取。

英文摘要:

Achieving a high level of immersion and adaptation in virtual reality (VR) requires precise measurement and representation of user state. While extrinsic physical characteristics such as locomotion and pose can be accurately tracked in real-time, reliably capturing mental states is more challenging. Quantitative psychology allows considering more intrinsic features like emotion, attention, or cognitive load. Time perception, in particular, is strongly tied to users' mental states, including stress, focus, and boredom. However, research on objectively measuring the pace at which we perceive the passage of time is scarce. In this work, we investigate the potential of electroencephalography (EEG) as an objective measure of time perception in VR, exploring neural correlates with oscillatory responses and time-frequency analysis. To this end, we implemented a variety of time perception modulators in VR, collected EEG recordings, and labeled them with overestimation, correct estimation, and underestimation time perception states. We found clear EEG spectral signatures for these three states, that are persistent across individuals, modulators, and modulation duration. These signatures can be integrated and applied to monitor and actively influence time perception in VR, allowing the virtual environment to be purposefully adapted to the individual to increase immersion further and improve user experience. A free copy of this paper and all supplemental materials are available at https://vrarlab.uni.lu/pub/brain-signatures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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