Wells Erika T, Leber Andrew B, Sparrow John E
Department of Psychology, University of New Hampshire, Conant Hall, 10 Library Way, Durham, NH 03824, USA.
Perception. 2011;40(12):1503-18. doi: 10.1068/p6976.
Motion-induced blindness (MIB) is the perceived disappearance of a salient target when surrounded by a moving mask. Much research has focused on the role of target characteristics on perceived disappearance by a coherently moving mask. However, we asked a different question: mainly, are there certain characteristics about the mask that can impact disappearance? To address this, we behaviorally tested whether MIB is enhanced or reduced by the property of common fate. In experiments 1, 2, and 3, we systematically manipulated the motion coherence of the mask and measured the amount of target disappearance. Results showed that, as mask coherence increased, perceived target disappearance decreased. This pattern was unaffected by the lifetime of the moving dots, the dot density of the motion stimulus, or the target eccentricity. In experiment 4, we investigated whether the number of motion directions contained in an incoherent mask could account for our findings. Using masks containing 1, 3, and 5 motion directions, we found that disappearance did not increase proportionally to the number of motion directions. We discuss our findings in line with current proposed mechanisms of MIB.
运动诱导失明（MIB）是指当一个显著目标被移动的掩蔽物包围时，该目标会被感知为消失。许多研究都集中在目标特征对被连贯移动的掩蔽物感知消失的作用上。然而，我们提出了一个不同的问题：主要是，掩蔽物是否存在某些特征会影响目标消失？为了解决这个问题，我们通过行为测试了共同命运属性是否会增强或减少运动诱导失明。在实验1、2和3中，我们系统地操纵了掩蔽物的运动连贯性，并测量了目标消失的程度。结果表明，随着掩蔽物连贯性的增加，感知到的目标消失减少。这种模式不受移动点的持续时间、运动刺激的点密度或目标离心率的影响。在实验4中，我们研究了非连贯掩蔽物中包含的运动方向数量是否可以解释我们的发现。使用包含1、3和5个运动方向的掩蔽物，我们发现消失程度并没有与运动方向的数量成比例增加。我们根据当前提出的运动诱导失明机制来讨论我们的发现。
