這種錯覺是由隨機的眼球運動引起的，這些運動在水平和垂直方向上是獨立的。然而，圖中兩種型別的圖案几乎消除了平行於每種圖案型別的眼球運動的影響。因此，圓盤刺激的神經元傳遞訊號，表明圓盤由於眼球運動的水平分量而抖動，而背景刺激的神經元傳遞訊號，表明運動是由於獨立的垂直分量引起的。由於這兩個區域獨立抖動，大腦將這些區域解釋為對應於獨立的物體 (Olveczky et al. 2003)。
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