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There and back again: Revisiting the on-time effect

机译：在那里，然后又回来：回顾准时效果

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In apparent motion, static stimuli presented successively in shifted locations produce a subjective percept of continuous motion. Reducing stimulus exposure (or on-time) was shown to consistently increase the perceived velocity of apparent motion (Vision Research 29 (1989), 335-347), yet surprisingly little investigation has followed up on the discovery of this illusion. In five experiments, we delineate the boundary conditions of the on-time illusion in order to clarify its underlying mechanisms. Subjects viewed multi-item apparent-motion displays, in which at some point, on-time duration either increased or decreased. Objective velocity remained unchanged, yet participants had to judge whether they perceived the motion to become slower or faster. We observed the on-time illusion during both fast and slow apparent motion. The effect was not modulated by stimulus luminance, thus precluding an energy-summation account of the illusion. It generalized from speed perception to time perception in a temporal bisection task. The illusion was specific to apparent motion, as it did not occur with veridical motion. Finally, the illusion persisted when on-time and off-time were not confounded, that is, when off-time remained constant. These findings are discussed in the framework of current models of motion perception. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在明显的运动中，在位移位置连续出现的静态刺激会产生连续运动的主观感觉。减少刺激暴露（或准时）被证明可以持续增加视在运动的感知速度（Vision Research 29（1989），335-347），但是令人惊讶的是，很少有研究对该错觉进行跟进。在五个实验中，我们描述了准时错觉的边界条件，以阐明其潜在机制。受试者观看了多项目视在运动显示，在某些情况下，准时持续时间有所增加或减少。客观速度保持不变，但是参与者必须判断他们是否感觉运动变慢还是变快。我们在快速和缓慢的表观运动中都观察到了准时错觉。该效果不受刺激亮度的调节，因此排除了错觉的能量总和。在时间平分任务中，它从速度感知扩展为时间感知。幻觉是特定于视在运动的，因为它不是在垂直运动中发生的。最后，在不混淆上班时间和下班时间（即下班时间保持不变）的情况下，这种幻想仍然存在。这些发现将在当前运动感知模型的框架中进行讨论。 （C）2015 Elsevier Ltd.保留所有权利。

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