Kooijman Lars, Asadi Houshyar, Mohamed Shady, Nahavandi Saeid
Institute for Intelligent Systems Research and Innovation, Deakin University, Geelong, Victoria, Australia.
Harvard Paulson School of Engineering and Applied Sciences, Harvard University, Allston, MA 02134, USA.
R Soc Open Sci. 2023 Apr 12;10(4):221622. doi: 10.1098/rsos.221622. eCollection 2023 Apr.
The feeling of self-movement that occurs in the absence of physical motion is often referred to as vection, which is commonly exemplified using the train illusion analogy (TIA). Limited research exists on whether the TIA accurately exemplifies the experience of vection in virtual environments (VEs). Few studies complemented their vection research with participants' qualitative feedback or by recording physiological responses, and most studies used stimuli that contextually differed from the TIA. We investigated whether vection is experienced differently in a VE replicating the TIA compared to a VE depicting optic flow by recording subjective and physiological responses. Additionally, we explored participants' experience through an open question survey. We expected the TIA environment to induce enhanced vection compared to the optic flow environment. Twenty-nine participants were visually and audibly immersed in VEs that either depicted optic flow or replicated the TIA. Results showed optic flow elicited more compelling vection than the TIA environment and no consistent physiological correlates to vection were identified. The post-experiment survey revealed discrepancies between participants' quantitative and qualitative feedback. Although the dynamic content may outweigh the ecological relevance of the stimuli, it was concluded that more qualitative research is needed to understand participants' vection experience in VEs.
在没有身体运动时出现的自我运动感觉通常被称为运动错觉，常用火车错觉类比（TIA）来举例说明。关于TIA是否能准确例证虚拟环境（VE）中的运动错觉体验，现有研究有限。很少有研究通过参与者的定性反馈或记录生理反应来补充其运动错觉研究，并且大多数研究使用的刺激在背景上与TIA不同。我们通过记录主观和生理反应，研究了与描绘光流的VE相比，在复制TIA的VE中运动错觉体验是否有所不同。此外，我们通过开放式问题调查探索了参与者的体验。我们预计与光流环境相比，TIA环境会引发更强的运动错觉。29名参与者通过视觉和听觉沉浸在描绘光流或复制TIA的VE中。结果表明，光流比TIA环境引发了更强烈的运动错觉，并且未发现与运动错觉一致的生理关联。实验后的调查揭示了参与者定量和定性反馈之间的差异。尽管动态内容可能比刺激的生态相关性更重要，但得出的结论是，需要更多的定性研究来了解参与者在VE中的运动错觉体验。
