老龄化和背景节奏对多源环境中的选择性倾听的影响
Dylan V Pearson1, Yi Shen2, J Devin McAuley3
1Department of Speech, Language, and Hearing Sciences, Indiana University, USA.
Hearing research
|August 29, 2025
概括
当它们与目标声音相似时, 节奏的背景声音会更加干扰听力. 这种背景节奏效应在老年人中减少,影响选择性听力.
科学领域:
- 听觉感知
- 心理声学
- 认知神经科学
背景情况:
- 听觉信号中的节奏规律会影响选择性听力.
- 有规律的节奏结构有助于识别目标,而有规律的背景则更有效地掩盖目标.
研究的目的:
- 研究听力选择性倾听中的背景节奏效应.
- 确定目标和背景信号之间的感知相似性的影响.
- 评估背景节奏对听者的年龄的影响.
主要方法:
- 使用一种新的合成元音识别模式.
- 呈现给年轻和年长的听众同时的目标序列与同时或异时的背景序列交错.
- 目标和背景元音刺激之间的感知相似性有所不同.
主要成果:
- 当目标和背景很容易区分时, 听众对背景节奏不敏感.
- 与不规则的背景相比,常规的,感知上相似的背景显著降低了母音识别率.
- 在老年听众中,背景节奏效应降低.
结论:
- 背景节奏效应不是由于能量掩盖,它超出了连续的语音刺激.
- 感知相似性对于背景节奏效应的表现至关重要.
- 在多源环境中对背景节奏的敏感性可能随着年龄的增长而下降.
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