Various factors influence the degree of cybersickness a user can suffer in an immersive virtual environment, some of which can be controlled without adapting the virtual environment itself. When using HMDs, one example is the size of the field of view. However, the degree to which factors like this can be manipulated without affecting the user negatively in other ways is limited. Another prominent characteristic of cybersickness is that it affects individuals very differently. Therefore, to account for both the possible disruptive nature of alleviating factors and the high interpersonal variance, a promising approach may be to intervene only in cases where users experience discomfort symptoms, and only as much as necessary. Thus, we conducted a first experiment, where the field of view was decreased when people feel uncomfortable, to evaluate the possible positive impact on sickness and negative influence on presence. While we found no significant evidence for any of these possible effects, interesting further results and observations were made.

翻译：在沉浸式虚拟环境中，影响用户晕动症程度的因素众多，其中部分因素无需修改虚拟环境本身即可进行调控。以头戴显示器为例，视场角尺寸便是典型可调参数。然而，此类参数的调控幅度受限于避免对用户体验造成其它负面影响。晕动症的另一个显著特征是其个体差异极大。因此，为兼顾缓解措施的潜在干扰性与高度的人际差异，仅在用户出现不适症状时进行适度干预或许是一种可行方案。为此我们开展了初步实验：当用户感到不适时动态缩减视场角，以评估该操作对缓解晕动症及可能破坏临场感的双向影响。虽未发现显著证据表明上述效应存在，但实验过程中获得了若干值得关注的发现与观察结论。