Vection in depth during treadmill walking
Vection in depth during treadmill walking
复制标题
DOI：
10.1068/p7449
复制
发表时间：
2013-01-01
期刊：
影响因子：
1.7
通讯作者：
Allison, Robert S.
中科院分区：
文献类型：
--
作者：
Ash, April;Palmisano, Stephen;Allison, Robert S.
矢量通常是在静止的观察者（即提供关于自我运动的视觉信息的条件）中诱导的。两项最近的研究已经检查了主动跑步机行走期间的向量，一项研究报告了在与视觉模拟的自我运动相同的方向上跑步机行走损害向量（Onimaru等人，2010 Journal of Vision 10（7）：860），另一项研究报告了它增强向量（Seno等人，2011 Perception 40 747-750; Seno等人，2011 Attention，Perception，& Psychophysics 73 1467-1476）。我们的研究扩展了这些早期的调查，在观察者主动运动的矢量。在实验1中，我们提出了径向扩展的光流，并比较了在固定的观察者与在跑步机上以“匹配”的速度向前行走时产生的矢量。实验2比较了向前跑步机行走引起的vection，而观看扩大或收缩的光流与观看这些相同的显示器，而静止的回放引起的。在这两个实验中，受试者的头部运动被纳入自我运动显示（作为模拟视点抖动）或简单地忽略。我们发现，跑步机行走总是减少vection（与静止的观看条件相比）和模拟视点抖动总是增加vection（与恒速显示器相比）。这些研究结果表明，虽然一致的视觉前庭信息的自我加速增加vection，生物力学的自我运动信息减少这种经验（无论它是否是一致的或不与视觉输入）。
Vection has typically been induced in stationary observers (ie conditions providing visual-only information about self-motion). Two recent studies have examined vection during active treadmill walking one reported that treadmill walking in the same direction as the visually simulated self-motion impaired vection (Onimaru et al, 2010 Journal of Vision 10(7):860), the other reported that it enhanced vection (Seno et al, 2011 Perception 40 747-750; Seno et al, 2011 Attention, Perception, & Psychophysics 73 1467-1476). Our study expands on these earlier investigations of vection during observer active movement. In experiment 1 we presented radially expanding optic flow and compared the vection produced in stationary observers with that produced during walking forward on a treadmill at a 'matched' speed. Experiment 2 compared the vection induced by forward treadmill walking while viewing expanding or contracting optic flow with that induced by viewing playbacks of these same displays while stationary. In both experiments subjects' tracked head movements were either incorporated into the self-motion displays (as simulated viewpoint jitter) or simply ignored. We found that treadmill walking always reduced vection (compared with stationary viewing conditions) and that simulated viewpoint jitter always increased vection (compared with constant velocity displays). These findings suggest that while consistent visual vestibular information about self-acceleration increases vection, biomechanical self-motion information reduces this experience (irrespective of whether it is consistent or not with the visual input).