Dynamic environments often contain features that change at slightly different times. Here we investigated how sensitivity to these slight timing differences depends on spatial relationships among stimuli. Stimuli comprised bilaterally presented plaid pairs that rotated, or radially expanded and contracted to simulate depth movement. Left and right hemifield stimuli initially moved in the same or opposite directions, then reversed directions at various asynchronies. College students judged whether the direction reversed first on the left or right-a temporal order judgment (TOJ). TOJ thresholds remained similar across conditions that required tracking only one depth plane, or bilaterally synchronized depth planes. However, when stimuli required simultaneously tracking multiple depth planes-counter-phased across hemifields-TOJ thresholds doubled or tripled. This effect depended on perceptual set. Increasing the certainty with which participants simultaneously tracked multiple depth planes reduced TOJ thresholds by 45 percent. Even complete certainty, though, failed to reduce multiple-depth-plane TOJ thresholds to levels obtained with single or bilaterally synchronized depth planes. Overall, the results demonstrate that global depth perception can alter local timing sensitivity. More broadly, the findings reflect a coarse-to-fine spatial influence on how we sense time.

中文翻译：

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全局深度感知会更改局部时间敏感性。

动态环境通常包含的功能会在稍微不同的时间变化。在这里，我们研究了对这些微小的时序差异的敏感性如何取决于刺激之间的空间关系。刺激包括双向呈现的格子对，它们旋转或径向扩展和收缩以模拟深度运动。左半球和右半球刺激最初沿相同或相反的方向移动，然后以各种异步方向反向。大学生判断方向是先左还是后反转-时间顺序判断（TOJ）。在只需要跟踪一个深度平面或双向同步深度平面的条件下，TOJ阈值保持相似。然而，当刺激需要同时跟踪多个深度平面时，跨半场的相反相位-TOJ阈值增加了一倍或两倍。这种效果取决于感知力。参与者同时跟踪多个深度平面的确定性提高了，TOJ阈值降低了45％。但是，即使完全确定，也无法将多深度平面TOJ阈值降低到使用单个或双向同步深度平面获得的水平。总体而言，结果表明全局深度感知可以改变局部时序敏感性。从更广泛的角度来看，这些发现反映了对我们如何感知时间的粗略到精细的空间影响。但是，未能将多深度平面TOJ阈值降低到使用单个或双向同步深度平面获得的水平。总体而言，结果表明，全局深度感知可以改变局部时序敏感性。从更广泛的角度来看，这些发现反映了对我们如何感知时间的粗略到精细的空间影响。但是，未能将多深度平面TOJ阈值降低到使用单个或双向同步深度平面获得的水平。总体而言，结果表明全局深度感知可以改变局部时序敏感性。从更广泛的角度来看，这些发现反映了对我们如何感知时间的粗略到精细的空间影响。