Visual and non-visual cues in the perception of linear self motion
Visual and non-visual cues in the perception of linear self motion
复制标题
DOI：
10.1007/s002210000504
复制
发表时间：
2000-11-01
影响因子：
2
通讯作者：
Zikovitz, DC
中科院分区：
文献类型：
--
作者：
Harris, LR;Jenkin, M;Zikovitz, DC
令人惊讶的是，当我们四处走动时，视觉或前庭刺激在更新我们在空间中的感知位置方面的感知后果知之甚少。我们评估了视觉和前庭线索在确定被动、线性自我运动的感知距离中的作用。受试者被提示进行恒定加速运动：虚拟现实显示中的光流，黑暗中的物理运动或视觉和物理运动的组合。当受试者感觉到他们已经走过了一段之前在视觉上或物理上给他们的距离时，他们就会表示出来。光流引起的运动感知距离相对于先前呈现的视觉目标是准确的，但在感知上相当于大约一半的物理运动。在黑暗中物理运动的感知距离相对于先前呈现的物理运动是准确的，但在感知上等同于视觉上呈现的更长的距离。当视觉和物理提示同时存在时，自我运动的感知距离与所经历的物理运动的感知距离更接近，而不是同时出现的视觉运动，即使目标是视觉呈现的。我们从非视觉线索捕获的角度讨论了物理线索在决定自我运动感知距离方面的优势。这些发现与新兴研究有关，这些研究表明前庭输入对处理自我运动的神经机制的重要性。
Surprisingly little is known of the perceptual consequences of visual or vestibular stimulation in updating our perceived position in space as we move around. We assessed the roles of visual and vestibular cues in determining the perceived distance of passive, linear self motion. Subjects were given cues to constant-acceleration motion: either optic flow presented in a virtual reality display, physical motion in the dark or combinations of visual and physical motions. Subjects indicated when they perceived they had traversed a distance that had been previously given to them either visually or physically. The perceived distance of motion evoked by optic flow was accurate relative to a previously presented visual target but was perceptually equivalent to about half the physical motion. The perceived distance of physical motion in the dark was accurate relative to a previously presented physical motion but was perceptually equivalent to a much longer visually presented distance. The perceived distance of self motion when both visual and physical cues were present was more closely perceptually equivalent to the physical motion experienced rather than the simultaneous visual motion, even when the target was presented visually. We discuss this dominance of the physical cues in determining the perceived distance of self motion in terms of capture by non-visual cues. These findings are related to emerging studies that show the importance of vestibular input to neural mechanisms that process self motion.