Visually-induced Motion Sickness by 3D Movie and changes of energy metabolism

3D电影引起的视觉晕动病与能量代谢的变化

• 批准号: 09838023
• 负责人: ISU Naoki
• 金额: $ 1.86万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09838023/
• 关键词: motion sickness; 3D movie; computer graphics; optokinetic stimulus; subjective virtical; vestibular system; visually-induced; gravity; シネラマ酔

1.Rotational movement of 3D video images causing visually-induced motion sickness was analyzed to examine how the gravity contributes to induce visually-induced motion sickness. While an angle of a rotation axis of 3D video image from the gravity direction, and its angle from subjective vertical which was perceived by viewers through 3D video image, were varied, the severity of visually-induced motion sickness was measured.2.Twelve students(8 males and 4females), ranging in age from 20 to 25 years, participated in this study as subjects. None of the subjects reported any medical problems and all presented with normal vestibular functions. Nine optokinetic stimuli of 3D video images were produced by computer graphics that drew an inside view of a virtual room (10mW×10mD×6mH). In each stimulus, rotation axis of video image tilted at 0, 45, or 90 deg with respect to the viewers' vertical (the gravity direction), and visually-induced subjective vertical (the vertical direction in the virtu … More al room) was inclined at 0, 45, or 90 deg with respect to the rotation axis. Video images were projected to a 140 inch screen for 3D display that was positioned 3 m ahead of the subjects in a dark room. View angles for the subjects were 54 degree horizontally and 40 deg vertically. Each stimulus was presented to the subjects for 45 s with interstimulus intermission of 15 s. A rest of 2 minutes was given after every 6 stimuli. The severity of visually-induced motion sickness was measured by the method of paired comparison ; i.e., discomfort caused by 3D video image was subjectively compared between pairs provided in series. It was then transformed into a distance measure in accordance with the law of comparative judgement of Thurstone, case V. Severity comparisons were performed 210 times by every subject (30 times in each experiment).3.The severity of visually-induced motion sickness was enhanced as tilt angle of the image rotation axis from the gravity direction was increased. It was also enhanced as inclination of the subjective vertical was increased with respect to the image rotation axis. The distance measure of the severity of visually-induced motion sickness (MS) was analyzed by multi variable regression with the horizontal component of angular velocity of image rotation (i.e., vertical rotation component) (OK'h), angular velocity of rotation of subjective vertical (SV'), and angular acceleration of rotation of subjective vertical (SV''). Then it was expressed as MS=0.45OK'h+0.73SV'+0.19SV''+MSィイD20ィエD2, where MS0 is a constant.4.These results indicated that rotation of subjective vertical contributes importantly to evoke visually-induced motion sickness. Thus, it was suggested that visually-induced motion sickness attributes to sensory conflict between the visual and the equilibrium sensations in perception of the vertical (gravitational direction) as well as in perception of rotation. Less

1.分析了3D视频图像的旋转运动引起的视觉诱发的运动病，以检验重力是如何导致视觉诱发的运动病的。通过改变3D视频图像的旋转轴与重力方向的夹角，以及与观看者通过3D视频图像感知到的主观垂直方向的夹角，测量视觉诱发运动病的严重程度。2.12名学生(男8人，女4人)，年龄20~25岁。没有一名受试者报告有任何医疗问题，所有受试者的前庭功能都正常。计算机图形学绘制了一个虚拟房间(10 mW×10mD×6mh)的内景图，产生了9个3D视频图像的视动刺激。在每个刺激中，视频图像的旋转轴相对于观看者的垂直(重力方向)倾斜0、45或90度，并且视觉诱导的主观垂直(VIRTU…中的垂直方向更多的空间)相对于旋转轴倾斜0、45或90度。在黑暗的房间里，视频图像被投影到140英寸的屏幕上，用于3D显示，该屏幕位于受试者前方3米处。受试者的视角水平为54度，垂直为40度。每个刺激呈现给受试者45个S，刺激间歇15个S，每6个刺激后休息2分钟。采用配对比较的方法测量视觉诱发运动病的严重程度，即在串联提供的配对之间主观比较3D视频图像引起的不适。每个受试者进行210次严重程度比较(每个实验30次)。3.视觉诱发运动病的严重程度随着图像旋转轴相对于重力方向的倾斜角的增加而增加。当主观垂直相对于图像旋转轴的倾斜度增加时，它也被增强。用图像旋转角速度的水平分量(即垂直旋转分量)(OK‘h)、主观垂直旋转的角速度(Sv’)和主观垂直旋转的角加速度(Sv‘’)对视觉诱发运动病(MS)严重程度的距离度量进行多元回归分析。然后将其表示为MS=0.45OK‘h+0.73SV’+0.19SV‘+MSィイD20ィエD2，其中MS0为常数。4.这些结果表明，主观垂直旋转对诱发视觉诱发运动病有重要作用。因此，有人认为，视觉诱发的运动病归因于视觉和平衡感觉在垂直(重力方向)知觉以及旋转知觉中的感觉冲突。较少

项目成果

松本 剛: "動画像の回転軸方向による視因性動揺病強度の差異"宇宙航空環境医学. 36. (1999)

Tsuyoshi Matsumoto：“视觉晕动病强度的差异取决于运动图像的旋转轴方向”，航空航天环境医学36。（1999）

松本剛: "動画像の回転軸方向による視因性動揺病強度の差異"宇宙航空環境医学. 36(4). (1999)

Tsuyoshi Matsumoto：“视觉晕动病强度的差异取决于运动图像的旋转轴方向”航空航天环境医学36（4）（1999）。

井須尚紀: "コリオリ刺激の力学II.半規管系による回転感覚"Equilibrium Research. 59. 29-37 (2000)

Naoki Isu：“科里奥利刺激的力学 II. 半规管系统的旋转感觉”平衡研究 59. 29-37 (2000)。

井須尚紀: "コリオリ刺激の力学II.半規管系による回転感覚"Equilibrium Reserch. 59(1). 29-37 (2000)

Naoki Isu：“科里奥利刺激的力学 II。半规管系统的旋转感觉”平衡研究 59(1) 29-37 (2000)。

井須尚紀: "コリオリ刺激の力学I.コリオリ刺激時の半規管出力"Equilibrium Research. 58. 632-639 (1999)

Naoki Isu：“科里奥利刺激的力学 I. 科里奥利刺激期间的半规管输出”平衡研究 58. 632-639 (1999)。