During exposure to Virtual Reality (VR) a sensory conflict may be present, whereby the visual system signals that the user is moving in a certain direction with a certain acceleration, while the vestibular system signals that the user is stationary. In order to reduce this conflict, the brain may down-weight vestibular signals, which may in turn affect vestibular contributions to self-motion perception. Here we investigated whether vestibular perceptual sensitivity is affected by VR exposure. Participants' ability to detect artificial vestibular inputs was measured during optic flow or random motion stimuli on a VR head-mounted display. Sensitivity to vestibular signals was significantly reduced when optic flow stimuli were presented, but importantly this was only the case when both visual and vestibular cues conveyed information on the same plane of self-motion. Our results suggest that the brain dynamically adjusts the weight given to incoming sensory cues for self-motion in VR; however this is dependent on the congruency of visual and vestibular cues.

中文翻译：

---

虚拟现实中的多感官交互：光流降低前庭敏感性，但仅适用于一致的运动平面。

在接触虚拟现实 (VR) 期间，可能会出现感官冲突，视觉系统会发出信号表示用户正在以特定加速度向某个方向移动，而前庭系统则发出信号表示用户处于静止状态。为了减少这种冲突，大脑可能会降低前庭信号的权重，这反过来又会影响前庭对自我运动感知的贡献。在这里，我们调查了 VR 暴露是否会影响前庭知觉敏感性。参与者检测人工前庭输入的能力是在 VR 头戴式显示器上的光流或随机运动刺激期间测量的。当存在光流刺激时，对前庭信号的敏感性显着降低，但重要的是，只有在视觉和前庭线索都在同一平面上传递信息时才会出现这种情况。我们的结果表明，在 VR 中，大脑会动态调整赋予传入感官线索的权重，以实现自我运动；然而，这取决于视觉和前庭线索的一致性。