视觉与前庭玩家固定静止框架对晕屏症的减轻效果

文献信息

中文摘要

背景： 玩家固定静止框架（RF），例如虚拟鼻子，已被提出作为减轻晕屏症的线索，但其潜在机制仍不清楚。本研究探讨在被动视觉诱导运动期间，玩家固定RF如何影响晕屏症、眼动行为和感知朝向。方法：在两项使用虚拟过山车和眼动追踪的实验中，我们发现玩家固定RF减少了总体晕屏症，且未损害临场感或视动感，并促进了更集中的注视分布，该分布在重复试验中逐渐与对照条件分离。然而，由于在此设置中RF的存在与其与直立方向的对齐存在混杂，第二项实验通过场景倾斜引入了视觉-前庭冲突。结果：在这种冲突下，只有与重力（前庭）直立对齐的RF抑制了症状的累积性加重，并保持了真实的朝向感知，而与倾斜视觉场景对齐的RF则没有。结论：这些结果提示，玩家固定RF至少通过两个通道起作用：将注视从 destabilizing 周边运动中重新分配，以及作为自我中心朝向参考，其有效性可能因其与前庭直立的一致性而进一步增强。这些发现通过强调视觉放置和空间对齐均有助于其有效性，为静止框架线索的设计提供了信息。

英文摘要

Player-fixed rest frames (RFs) such as virtual noses have been proposed as cybersickness mitigation cues, yet their underlying mechanisms remain unclear. This study investigates how a player-fixed RF influences cybersickness, eye movement behavior, and perceived orientation during passive visually induced motion. In two experiments using a virtual roller coaster with eye tracking, we found that a player-fixed RF reduced overall cybersickness without compromising presence or vection, and promoted a more centralized gaze distribution that progressively diverged from the control condition over repeated trials. However, because the RF's presence and its alignment with upright were confounded in this setting, a second experiment introduced a visual-vestibular conflict through scene tilt. Under this conflict, only an RF aligned with gravitational (vestibular) upright suppressed the cumulative buildup of sickness and preserved veridical orientation perception, whereas an RF aligned with the tilted visual scene did not. These results suggest that a player-fixed RF operates through at least two channels: redistributing gaze away from destabilizing peripheral motion, and serving as an egocentric orientation reference whose effectiveness may be further enhanced by its congruence with vestibular upright. The findings inform the design of rest frame cues by highlighting that both visual placement and spatial alignment contribute to their effectiveness.