Attentional modulation in perception of visual motion events
Attentional modulation in perception of visual motion events
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DOI：
10.1068/p271041
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发表时间：
1998-01-01
期刊：
影响因子：
1.7
通讯作者：
Shimojo, S
中科院分区：
文献类型：
--
作者：
Watanabe, K;Shimojo, S
相同的视觉目标以相等和恒定的速度相互移动，可以被感知为反弹或相互穿过。这种运动感知的研究主要是在运动整合的背景下进行的。由于大多数模糊运动的感知受到注意的影响，因此在这种情况下也可能发生注意调制。我们研究了注意力从移动目标上的分散是否会改变每一个目标的相对频率。在观察的流/弹跳运动事件在周边视野，视觉注意力被破坏的视觉干扰突然出现在不同的时间和地点（实验1;外源性分心的注意力）或由一个额外的歧视任务的需求（实验2和3;内源性分心的注意力）。这两种类型的注意力分散都增加了跳跃式感知的频率，降低了流动式感知的频率。这些结果表明，注意力可以促进物体运动的感知，使其继续沿着与过去相同的方向运动。
Identical visual targets moving across each other with equal and constant speed can be perceived either to bounce off or to stream through each other. This bistable motion perception has been studied mostly in the context of motion integration. Since the perception of most ambiguous motion is affected by attention, there is the possibility of attentional modulation occurring in this case as well. We investigated whether distraction of attention from the moving targets would alter the relative frequency of each percept. During the observation of the streaming/bouncing motion event in the peripheral visual field, visual attention was disrupted by an abrupt presentation of a visual distracter at various timings and locations (experiment 1; exogenous distraction of attention) or by the demand of an additional discrimination task (experiments 2 and 3; endogenous distraction of attention). Both types of distractions of attention increased the frequency of the bouncing percept and decreased that of the streaming percept. These results suggest that attention may facilitate the perception of object motion as continuing in the same direction as in the past.