Graduate School of Interdisciplinary Information Studies, The University of Tokyo, Tokyo, Japan.
Department of Psychology, The University of Tokyo, Tokyo, Japan.
Atten Percept Psychophys. 2022 Feb;84(2):576-582. doi: 10.3758/s13414-021-02425-8. Epub 2021 Dec 28.
The space surrounding the body in which individuals interact with the environment is known as the peripersonal space (PPS). Previous studies have reported that PPS has multisensory nature. However, the relationship between the multisensory nature of PPS and an individuals' defensive actions has not been fully clarified to date. We investigated this relationship by examining the multisensory representation of PPS under situations in which visual feedback of body movements was delayed by using a virtual reality system. The results indicated that body-movement delays extended the multisensory PPS, suggesting that body-movement delays increased the potential threat of distant objects because it was necessary to prepare defensive actions sooner. The previous findings can be interpreted that PPS is modulated by the spatio-temporal relationship between people and external stimuli. This view may provide evidence of interactions between defensive and nondefensive functions of the multisensory PPS.
个体与环境相互作用的身体周围空间被称为peripersonal 空间（PPS）。先前的研究报告称，PPS 具有多感觉性质。然而，迄今为止，PPS 的多感觉性质与个体的防御动作之间的关系尚未完全阐明。我们通过使用虚拟现实系统检查身体运动的视觉反馈延迟的情况下，研究了这种关系。结果表明，身体运动的延迟扩展了多感觉 PPS，这表明身体运动的延迟增加了远距离物体的潜在威胁，因为需要更早地准备防御动作。先前的发现可以解释为 PPS 是由人与外部刺激之间的时空关系调节的。这种观点可能为多感觉 PPS 的防御和非防御功能之间的相互作用提供证据。
