Effects of image scale and system time delay on simulator sickness within head-coupled virtual environments
Effects of image scale and system time delay on simulator sickness within head-coupled virtual environments
复制标题
DOI：
10.1518/001872001775992552
复制
发表时间：
2001-03-01
期刊：
影响因子：
3.3
通讯作者：
Gawron, VJ
中科院分区：
文献类型：
--
作者：
Draper, MH;Viirre, ES;Gawron, VJ
新的视觉-前庭感觉间刺激模式经常导致模拟器病的症状，增加了对虚拟环境暴露的健康和安全的担忧。两个实验调查了在接触头对虚拟界面30分钟期间和之后，相互冲突的视觉前庭线索对模拟器疾病主观报告的影响。实验1考察了虚像比例因子(0.5、1.0、2.0倍，由不同的几何视场产生)，实验2考察了额外的系统时延(125、250ms)。模拟器病指标包括暴露过程中的口头自我报告和模拟器病问卷(暴露前)。曝光后即刻和曝光后20分钟)。还记录了头部偏航角位置数据。在缩小(0.5)和放大(2.0)图像比例因子条件下，模拟器晕车症状的报告明显多于中性条件下(1.0)。然而，模拟器疾病并不随时间延迟的变化而变化。此外，跨实验的比较表明，随着时间延迟的增加，模拟器疾病的发生率没有明显增加，超过标称值(48ms)。头部角度位置数据在不同条件下显示出一定的系统变化。本研究的实际或潜在应用包括虚拟环境培训、仿真和娱乐系统。
Novel patterns of visual-vestibular intersensory stimulation often result in symptoms of simulator sickness, raising health and safety concerns regarding virtual environment exposure. Two experiments investigated the effect of conflicting visual-vestibular cues on subjective reports of simulator sickness during and after a 30-min exposure to a head-coupled virtual interface. Virtual image scale factors (0.5, 1.0, 2.0 magnification, generated by varying geometric field of view angle) were investigated in Experiment 1, and additional system time delays (125, 250 ms) were investigated in Experiment 2. Simulator sickness metrics included spoken self-reports during exposure and simulator sickness questionnaires (pre-exposure. immediate postexposure, and 20 min postexposure). Head yaw angular position data were also recorded. Reports of simulator sickness symptoms were significantly greater in the minification (0.5) and magnification (2.0) image scale factor conditions than in the neutral condition (1.0). Simulator sickness did not vary with changes in time delay, however. Furthermore, a comparison across experiments suggests no appreciable increase in simulator sickness with increasing time delays above the nominal value (48 ms). Head angular position data exhibited certain systematic variations across conditions. Actual or potential applications of this research include virtual environment training, simulation, and entertainment systems.