Waseda University, Tokyo, Japan.
Kyushu University, Fukuoka, Japan.
Sci Rep. 2020 Mar 13;10(1):4630. doi: 10.1038/s41598-020-61698-5.
When two different objects are sequentially presented at the same location, the viewer tends to misjudge them as identical (spatial congruency bias). The present study examined whether the spatial congruency bias would involve not only retinotopic but also non-retinotopic processing using the Ternus-Pikler illusion. In the experiments, two objects (central and peripheral) appeared in an initial frame. The target object was presented in the central area of the display, while the peripheral object was either on the left or right side of the target object. In the second frame, the target object was again presented in the central area, and the peripheral object was on the opposite side. Two kinds of inter-stimulus intervals were used. In the no-blank condition, the target object was perceived as stationary, and the peripheral object appeared to move to the opposite side. However, in the long-blank condition, the two objects were perceived to move together. Participants judged whether the target objects in the two frames were identical. As a result, the spatial congruency bias occurred irrespective of the ISI conditions. Our findings suggest that the spatial congruency bias is mainly based on retinotopic processing.
当两个不同的物体在同一位置依次呈现时，观察者往往会错误地将它们视为相同的（空间一致性偏差）。本研究使用 Ternus-Pikler 错觉来检验空间一致性偏差是否不仅涉及视网膜处理，还涉及非视网膜处理。在实验中，两个物体（中央和外周）出现在初始帧中。目标物体出现在显示的中央区域，而外周物体出现在目标物体的左侧或右侧。在第二帧中，目标物体再次出现在中央区域，而外周物体出现在对面。使用了两种刺激间间隔。在无空白条件下，目标物体被感知为静止，而外周物体似乎移动到对面。然而，在长空白条件下，两个物体被感知为一起移动。参与者判断两帧中的目标物体是否相同。结果，无论 ISI 条件如何，空间一致性偏差都会发生。我们的研究结果表明，空间一致性偏差主要基于视网膜处理。
