Ohashi Yuto, Perusquía-Hernández Monica, Kiyokawa Kiyoshi, Sakata Nobuchika
Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.
Faculty of Advanced Science and Technology, Ryukoku University, Otsu 520-2194, Japan.
Sensors (Basel). 2025 Feb 4;25(3):938. doi: 10.3390/s25030938.
Numerous studies have previously explored the perception of horizontal movements. This includes research on Redirected Walking (RDW). However, the challenge of replicating the sensation of vertical movement has remained a recurring theme. Many conventional methods rely on physically mimicking steps or slopes, which can be hazardous and induce fear. This is especially true when head-mounted displays (HMDs) obstruct the user's field of vision. Our primary objective was to reproduce the sensation of ascending a slope while traversing a flat surface. This effect is achieved by giving the users the haptic sensation of gripping a tilted handrail similar to those commonly found on ramps or escalators. To achieve this, we developed a walker-type handrail device capable of tilting across a wide range of angles. We induced a cross-modal effect to enhance the perception of walking up a slope. This was achieved by combining haptic feedback from the hardware with an HMD-driven visual simulation of an upward-sloping scene. The results indicated that the condition with tactile presentation significantly alleviated fear and enhanced the sensation of walking uphill compared to the condition without tactile presentation.
此前已有大量研究探讨了对水平运动的感知。这包括对“重定向行走”（RDW）的研究。然而，复制垂直运动感觉的挑战一直是一个反复出现的主题。许多传统方法依赖于物理模拟步伐或斜坡，这可能很危险并引发恐惧。当头戴式显示器（HMD）遮挡用户视野时尤其如此。我们的主要目标是在穿越平坦表面时重现上坡的感觉。通过给用户一种握住类似于坡道或自动扶梯上常见的倾斜扶手的触觉感受来实现这种效果。为了实现这一点，我们开发了一种能够在很宽的角度范围内倾斜的步行者式扶手装置。我们诱导了一种跨模态效应来增强上坡行走的感知。这是通过将硬件的触觉反馈与HMD驱动的向上倾斜场景的视觉模拟相结合来实现的。结果表明，与没有触觉呈现的情况相比，有触觉呈现的情况显著减轻了恐惧并增强了上坡行走的感觉。
