Cybersickness is an unpleasant side effect of Virtual Reality and is often detrimental to a user’s experience. It shows a complex relationship to vection (illusory self-motion) as well as postural instability. Three experiments were conducted presenting both expanding and rotating colourful optimised Fraser Wilcox illusions as well as grey-scaled controlled versions of the illusions. Cybersickness and vection were reported and head movements in medio-lateral and anterior-posterior direction were recorded. The experiments found that perceived visual motion (illusory motion) is sufficient to elicit vection in the absence of any stimulated visual motion. The strength of motion perceived in the illusions was related to the experience of cybersickness and vection, with illusions that were perceived as moving more eliciting stronger experiences of both. Surprisingly, rotating illusions were continuously perceived as moving more compared to expanding motion illusions, which could be related to missing stereoscopic motion-in-depth cues. Head movements were unrelated to any stimuli properties, suggesting that the motion signal elicited by the illusions might not have been strong enough to cause postural instability. Finally, dizziness has been identified as the possible link between cybersickness, vection and head movements supporting sensory conflict as well postural instability theories of cybersickness.

Cyber​​sickness 是虚拟现实的一个令人不快的副作用，通常会损害用户的体验。它显示了与矢量（虚幻的自我运动）以及姿势不稳定性的复杂关系。进行了三个实验，展示了扩展和旋转彩色优化的弗雷泽威尔科克斯错觉以及错觉的灰度控制版本。报告了网络病和运动，并记录了中间横向和前后方向的头部运动。实验发现，在没有任何受刺激的视觉运动的情况下，感知到的视觉运动（幻觉运动）足以引发运动。幻觉中感知到的运动强度与网络病和运动的体验有关，被感知为移动更多的幻觉会引发更强烈的两者体验。令人惊讶的是，与扩展运动错觉相比，旋转错觉持续被感知为移动得更多，这可能与缺少立体深度运动线索有关。头部运动与任何刺激特性无关，这表明由错觉引起的运动信号可能不足以导致姿势不稳定。最后，头晕已被确定为网络病、运动和头部运动之间的可能联系，支持感觉冲突以及网络病的姿势不稳定理论。这表明由错觉引起的运动信号可能不足以导致姿势不稳定。最后，头晕已被确定为网络病、运动和头部运动之间的可能联系，支持感觉冲突以及网络病的姿势不稳定理论。这表明由错觉引起的运动信号可能不足以导致姿势不稳定。最后，头晕已被确定为网络病、运动和头部运动之间的可能联系，支持感觉冲突以及网络病的姿势不稳定理论。