Interactions of flicker and motion
Interactions of flicker and motion
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DOI：
10.1016/j.visres.2018.12.005
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发表时间：
2019-02-01
期刊：
影响因子：
1.8
通讯作者：
Caplovitz，Gideon P.
中科院分区：
文献类型：
--
作者：
Erlikhman，Gennady;Gutentag，Sion;Caplovitz，Gideon P.
我们提出了一系列新的观察闪烁和运动之间的相互作用，导致三种不同的感知效果。我们使用术语闪烁来描述刺激的亮度或颜色的交替变化（即从黑色闪烁到白色的圆圈，反之亦然）。当物体闪烁时，可以观察到三种不同的现象：（1）闪烁诱导运动（FLIM），其中单个静止物体以一定的速率闪烁时似乎在运动;（2）闪烁诱导运动抑制（FLIMS），其中当移动物体以一定速率闪烁时，移动物体看起来是静止的，以及（3）闪烁诱导的诱导运动（FLIIM），其中闪烁的移动物体诱导另一个闪烁的静止物体看起来在移动。在四个心理物理实验中，我们表征这些闪烁运动相互作用的关键刺激参数。相互作用最强的外围和闪烁频率高于10赫兹。感应运动不仅发生亮度闪烁，但等亮度的颜色变化以及。我们还发现，物理上运动的物体越多，对静止物体的运动感应就越多。我们提出的示范，这里报告的影响不能完全占眼球运动：我们表明，感知运动的多个静止物体，诱导通过闪烁移动可以出现独立移动，并在随机方向，而眼球运动会导致所有的对象出现一致移动。这些效应突出了时空动力学在运动表示中的基本作用以及闪烁和运动之间的密切关系。
We present a series of novel observations about interactions between flicker and motion that lead to three distinct perceptual effects. We use the term flicker to describe alternating changes in a stimulus’ luminance or color (i.e. a circle that flickers from black to white and visa-versa). When objects flicker, three distinct phenomena can be observed: (1) Flicker Induced Motion (FLIM) in which a single, stationary object, appears to move when it flickers at certain rates; (2) Flicker Induced Motion Suppression (FLIMS) in which a moving object appears to be stationary when it flickers at certain rates, and (3) Flicker-Induced Induced-Motion (FLIIM) in which moving objects that are flickering induce another flickering stationary object to appear to move. Across four psychophysical experiments, we characterize key stimulus parameters underlying these flicker-motion interactions. Interactions were strongest in the periphery and at flicker frequencies above 10 Hz. Induced motion occurred not just for luminance flicker, but for isoluminant color changes as well. We also found that the more physically moving objects there were, the more motion induction to stationary objects occurred. We present demonstrations that the effects reported here cannot be fully accounted for by eye movements: we show that the perceived motion of multiple stationary objects that are induced to move via flicker can appear to move independently and in random directions, whereas eye movements would have caused all of the objects to appear to move coherently. These effects highlight the fundamental role of spatiotemporal dynamics in the representation of motion and the intimate relationship between flicker and motion.