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The conceptual understanding of depth rather than the low-level processing of spatial frequencies drives the corridor illusion
Vision Research ( IF 1.8 ) Pub Date : 2021-01-13 , DOI: 10.1016/j.visres.2020.11.012
Gizem Y Yildiz 1 , Irene Sperandio 2 , Christine Kettle 3 , Philippe A Chouinard 1
Affiliation  

Our objective was to determine how different spatial frequencies affect the perceptual size rescaling of stimuli in the corridor illusion. Two experiments were performed using the method of constant stimuli. In experiment 1, the task required participants to compare the size of comparison and standard rings displayed over the same background image. ANOVA on the points of subject equality (PSEs) revealed that the perceived size of the top and bottom standard rings changed as a function of the availability of the high, medium, and low spatial frequency information. In experiment 2, the task required participants to compare the size of a comparison ring presented outside of the background image with a standard ring presented inside it. ANOVA on the PSEs revealed that the apparent size of the top and not the bottom standard ring changed depending on the availability of medium spatial frequency information. Eye-tracking revealed that the spatial frequency range of the background image in the periphery affected participants’ eye positioning, which may explain why the effects of different spatial frequencies fluctuated across experiments. Nonetheless, when we consider these findings together, we propose that the conceptual understanding of depth plays a more important role in explaining the corridor illusion than the low-level processing of depth information extracted from different spatial frequencies along separate channels.



中文翻译:

对深度的概念理解而不是对空间频率的低级处理驱动了走廊错觉

我们的目标是确定不同的空间频率如何影响走廊错觉中刺激的感知大小重新缩放。使用恒定刺激的方法进行了两个实验。在实验 1 中,任务要求参与者比较在同一背景图像上显示的比较和标准环的大小。对主体平等点 (PSE) 的方差分析表明,顶部和底部标准环的感知大小随高、中、低空间频率信息的可用性而变化。在实验 2 中,该任务要求参与者将背景图像之外的比较环的大小与其中的标准环的大小进行比较。PSE 上的方差分析表明,顶部而不是底部标准环的表观尺寸根据中空间频率信息的可用性而变化。眼动追踪显示,外围背景图像的空间频率范围会影响参与者的眼睛定位,这可以解释为什么不同空间频率的影响会在实验中波动。尽管如此,当我们一起考虑这些发现时,我们认为深度的概念理解在解释走廊错觉方面比对从不同空间频率沿不同通道提取的深度信息的低级处理更重要。眼动追踪显示,外围背景图像的空间频率范围会影响参与者的眼睛定位,这可以解释为什么不同空间频率的影响会在实验中波动。尽管如此,当我们一起考虑这些发现时,我们认为深度的概念理解在解释走廊错觉方面比对从不同空间频率沿不同通道提取的深度信息的低级处理更重要。眼动追踪显示,外围背景图像的空间频率范围会影响参与者的眼睛定位,这可以解释为什么不同空间频率的影响会在实验中波动。尽管如此,当我们一起考虑这些发现时,我们认为深度的概念理解在解释走廊错觉方面比对从不同空间频率沿不同通道提取的深度信息的低级处理更重要。

更新日期:2021-01-14
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