Ebbinghaus illusion depends more on the retinal than perceived size of surrounding stimuli
Ebbinghaus illusion depends more on the retinal than perceived size of surrounding stimuli
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DOI：
10.1016/j.visres.2018.10.010
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发表时间：
2019-01
期刊：
影响因子：
1.8
通讯作者：
Saki Takao;C. Clifford;Katsumi Watanabe
中科院分区：
文献类型：
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作者：
Saki Takao;C. Clifford;Katsumi Watanabe
被较小/较大的刺激包围的刺激看起来更大/更小（艾宾浩斯错觉）。我们研究了艾宾浩斯错觉是否取决于视网膜或感知周围刺激的大小。闪光滞后效应，其中闪光刺激感知滞后于移动刺激，被用来从周围刺激的感知大小中分离视网膜。两组四个围绕的圆盘平稳地改变了它们的大小：一个较大的圆盘缩小，另一个较小的圆盘扩大。两个相同的中心磁盘简要地介绍了在不同的时间相对于周围的磁盘在物理上相同的大小（重合时间）的时刻。对于尺寸变化观察到显著的闪光滞后效应（实验1）。参与者报告说，当两个中心圆盘在重合时间之前出现时，它们的大小相等。然而，该延迟与零没有显著差异，并且显著小于闪光滞后效应（实验2）预期的感知延迟。这些结果表明，艾宾浩斯错觉更多地依赖于视网膜比感知周围刺激的大小。
A stimulus surrounded by smaller/larger stimuli appears larger/smaller (Ebbinghaus illusion). We examined whether the Ebbinghaus illusion would depend on the retinal or perceived size of the surrounding stimuli. The flash-lag effect, where a flashed stimulus perceptually lags moving stimuli, was used to dissociate the retinal from perceived size of the surrounding stimuli. Two sets of four surrounding disks changed their size smoothly: one with larger disks shrinking, the other with smaller disks expanding. Two identical central disks were presented briefly at various timings relative to the moment when the surrounding disks were physically identical in their size (coincidence time). A significant flash-lag effect was observed for size change (Experiment 1). Participants reported the two central disks being in equal size when they appeared only slightly before the coincidence time. However, this asynchrony was not significantly different from zero and was significantly smaller than the perceptual delay expected from the flash-lag effect (Experiment 2). These results suggest that the Ebbinghaus illusion depends more on the retinal than perceived size of the surrounding stimuli.