Attribute capture in the precedence effect for long-duration noise sounds
Attribute capture in the precedence effect for long-duration noise sounds
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DOI：
10.1016/j.heares.2004.10.007
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发表时间：
2005-04-01
期刊：
影响因子：
2.8
通讯作者：
Schneider, BA
中科院分区：
文献类型：
--
作者：
Li, L;Qi, JG;Schneider, BA
听者感知地将来自声源的直接波与其附近表面的反射融合成一个单一的声音图像，位于声源或声源附近（优先效应）。本研究探讨了如何将直接波或模拟反射中间出现的短暂间隙合并到融合图像中。直接（前导）波和反射（滞后）波之间的短延迟（< 9.5 ms）。从滞后波的方向听不到声音。延迟10到15分钟。两种声音都被感知到了。但只有领先的一方听到了差距。当差距只出现在相关滞后声的短延迟时，它也被认为发生在领先侧。此外，前导音和滞后音的间隙检测阈值相同。这表明对间隙的感知并没有被抑制，而是被融入了引导音中。最后。直到脑间隙出现，头皮事件相关电位才与优先效应相关。这表明，当直接波或反射波的属性发生变化时，皮层机制参与维持融合。(c) 2004 Elsevier B.V.版权所有
Listeners perceptually fuse the direct wave from a sound Source with its reflections off nearby surfaces into a single sound image, located at or near the Sound source (the precedence effect). This study investigated how a brief gap presented in the middle of either a direct wave or simulated reflection is incorporated into the fused image. For short (< 9.5 ms) delays between the direct (leading) and reflected (lagging) waves. no sound was perceived from the direction of the lagging wave. For delays between 10 and 15 ins. both Sounds were perceived. but the gap was heard only on the leading side. When the gap was only in the correlated lagging Sound at short delays, it also was perceived as occurring on the leading side. Moreover, gap detection thresholds were the same for gaps in the leading and lagging sounds. suggesting that the perception of the gap was not suppressed, but rather incorporated into the leading sound. Finally. scalp event-related potentials were not associated with the precedence effect until the gap occurred. This suggests that cortical mechanisms are engaged to maintain fusion when attributes in direct or reflected waves change. (c) 2004 Elsevier B.V. All rights reserved.