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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A sound element gets lost in perceptual competition
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A sound element gets lost in perceptual competition

机译：声音元素在感知竞争中迷失了方向

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摘要

Our ability to understand auditory signals depends on properly separating the mixture of sound arriving from multiple sources. Sound elements tend to belong to only one object at a time, consistent with the principle of disjoint allocation, although there are instances of duplex perception or coallocation, in which two sound objects share one sound element. Here we report an effect of "nonallocation," in which a sound element "disappears" when two ongoing objects compete for its ownership. When a target tone is presented either as one of a sequence of tones or simultaneously with a harmonic vowel complex, it is heard as part of the corresponding object. However, depending on the spatial configuration of the scene, if the target, the tones, and the vowel are all presented together, the target may not be perceived in either the tones or the vowel, even though it is not perceived as a separate entity. This finding suggests an asymmetry in the strength of the perceptual evidence required to reject vs. to include an element within the auditory foreground, a result with important implications for how we process complex auditory scenes containing ambiguous information.
机译：我们了解听觉信号的能力取决于适当地分离来自多个来源的声音的混合。尽管存在双工感知或合并的情况，其中两个声音对象共享一个声音元素，但根据不相交分配的原理，声音元素往往一次仅属于一个对象。在这里，我们报告了“非分配”的效果，其中，当两个正在进行的对象争夺其所有权时，声音元素“消失”。当目标音调以一系列音调之一或与和声元音组合同时出现时，它会作为相应对象的一部分被听到。但是，根据场景的空间配置，如果目标，音调和元音都一起出现，即使没有将目标感知为单独的实体，也可能无法以音调或元音感知目标。这一发现表明，拒绝或将要素包含在听觉前景中所需的感知证据的强度不对称，这一结果对我们如何处理包含歧义信息的复杂听觉场景具有重要意义。

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