Phenomenal characteristics of the peripheral drift illusion
Phenomenal characteristics of the peripheral drift illusion
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DOI：
10.24636/vision.15.4_261
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
A. Kitaoka
中科院分区：
文献类型：
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作者：
A. Kitaoka
外围漂移错觉是指在周边视觉中可以观察到的异常运动错觉1-3)（图1）。虽然这种错觉的特点是光栅具有锯齿状亮度分布，但我们证明了具有逐步分布的光栅更有效。此外，四个不同亮度区域的顺序是至关重要的，即黑色和深灰色的组合或白色和浅灰色的组合。具体来说，错觉运动倾向于出现在从黑色区域到相邻深灰色区域的方向上，或者出现在从白色区域到相邻浅灰色区域的方向上（图2）。这个顺序增强了外围漂移错觉，如图3所示。我们指出了影响虚幻运动强度的两个新因素。(1)外围漂移错觉通过逐级亮度曲线增强，如上所述。具有平滑亮度轮廓的刺激，如图1所示，会产生较弱的错觉。(2)碎片化或弯曲的边缘增强了外围漂移错觉。长边构成的刺激产生的错觉较弱。生成图4
The peripheral drift illusion refers to an anomalous motion illusion that can be observed in peripheral vision 1-3) (Fig. 1). Although this illusion has been characterized by gratings that have sawtooth luminance profiles, we demonstrate that ones with stepwise profiles are more effective. Moreover, the order of four regions of different luminances is critical, i.e. the combination of black and dark-gray or the combination of white and light-gray. Specifically, illusory motion tends to appear in the direction from a black region to an adjacent dark-gray region or in the direction from a white region to an adjacent light-gray region (Fig. 2). This order enhances the peripheral drift illusion as shown in Fig. 3. We point out two novel factors that affect the strength of illusory motion.(1)The peripheral drift illusion is enhanced by stepwise luminance profiles, as mentioned above. Stimuli with smooth luminance profiles, like Fig. 1, give weaker illusion. (2)The peripheral drift illusion is enhanced by fragmented or curved edges. Stimuli made up of long edges give weaker illusion. Fig. 4 is produced