Postural Stability During Treadmill Locomotion as a Function of the Visual Polarity and Rotation of a Three-Dimensional Virtual Environment
Postural Stability During Treadmill Locomotion as a Function of the Visual Polarity and Rotation of a Three-Dimensional Virtual Environment
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跑步机运动期间的姿势稳定性作为三维虚拟环境的视觉极性和旋转的函数
DOI：
10.1162/1054746041422299
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Bloomberg
中科院分区：
文献类型：
--
作者：
J. T. Richards;A. Mulavara;J. Bloomberg
视觉输入为我们在运动过程中的方向和自我运动感知提供了重要的线索。本研究的目的是更好地了解和量化的视觉场景变量的影响：视觉极性和视觉场景旋转的姿势稳定性在跑步机运动。在60年代的试验中，受试者以4.0 km/h的速度行走，同时观看单视场，被动沉浸式，3D虚拟房间环境，其中包含偏振或非偏振内容，并将其反向投影到他们前面1.5 m的屏幕上，一次一个。场景在前30秒内保持静止，然后在剩余的30秒内以30/s的恒定速率围绕房间的滚动、俯仰或偏航轴旋转。每个受试者看到三个独立试验的视觉极性（极化，非极化）和场景旋转方向（滚动，俯仰，偏航）的每种组合。有一个主要的影响，视觉极性的变化，在躯干线性X（foreaft）的位置和躯干滚动和俯仰角取向与偏振场景造成更多的变化比非偏振场景。仅对于偏振场景，躯干滚动、俯仰和偏航角取向的可变性分别针对相应的场景旋转方向而增加。在一般情况下，旋转的视觉场景造成增加的变化，躯干运动相比，静态场景。视觉极性是设计虚拟环境运动模拟时的一个重要考虑因素。
Visual inputs provide us with important cues for orientation and self-movement perception during locomotion. The purpose of the present study was to better understand and quantify the effects of visual scene variables: visual polarity and visual scene rotation on postural stability during treadmill locomotion. During 60 s trials, subjects walked at 4.0 km/h while viewing a monoscopic, passive-immersive, 3D virtual room environment that contained either polarized or nonpolarized content and was back-projected onto a screen 1.5 m in front of them, one at a time. Scenes remained static for the first 30 s, then rotated about the roll, pitch, or yaw axis of the room at a constant rate of 30/s for the remaining 30 s. Each subject saw each combination of visual polarity (polarized, nonpolarized) and scene rotation direction (roll, pitch, yaw) for three separate trials. There was a main effect of visual polarity on variability in torso linear X (foreaft) position and torso roll and pitch angular orientations with polarized scenes causing more variability than nonpolarized scenes. For the polarized scenes only, variability in torso roll, pitch, and yaw angular orientations was increased for corresponding scene rotation directions, respectively. In general, rotating visual scenes caused increased variability in torso motion compared to static scenes. Visual polarity is an important consideration when designing virtual environment motion simulations.
DOI：
10.1037/0096-1523.21.3.480
发表时间：
1995-06-01
影响因子：
2.1
作者：
RIESER, JJ;PICK, HL;GARING, AE
通讯作者：
GARING, AE
神经病患者告诉我们关于光流的使用。
影响因子：
--
作者：
Vaina,LM;Rushton,SK
通讯作者：
Rushton,SK
行走过程中姿势的视觉控制：功能特异性。
DOI：
10.1037//0096-1523.22.4.818
发表时间：
1996
期刊：
Journal of experimental psychology. Human perception and performance
影响因子：
--
作者：
Warren,WH;Kay,BA;Yilmaz,EH
通讯作者：
Yilmaz,EH