年龄和句子背景对噪音中的听觉时间处理的影响
1School of Communication Science and Disorders, Florida State University, Tallahassee, Florida 32306, USAzx22c@fsu.edu.
JASA express letters
|August 22, 2025
概括
年长的成年人在噪音中表现出语音时间线索的处理减弱,特别是语音发声时间 (VOT). 然而,句子的上下文可以减轻与年龄相关的听觉感知.
科学领域:
- 听觉神经科学
- 语音感知
- 心理声学
背景情况:
- 年龄相关的听力损失会影响语音理解,尤其是在杂的环境中.
- 时间处理对于区分语音至关重要, 随着年龄的增长而下降.
- 句子上下文可以通过提供预测信息来帮助语音感知.
研究的目的:
- 研究老化如何影响语音时间线索的感知 (语音发声时间).
- 检查句子上下文 (dent偏差,tent偏差,中性) 对与年龄相关的时间处理的影响.
- 确定不同年龄段对噪音的影响是否有所不同.
主要方法:
- 18至81岁的正常听力成年人进行了语音分类任务.
- 使用不同的声音发声时间 (VOT) 的"帐"/"帐"对比.
- 在偏向或中立句子中以0dB的信号噪声形式呈现刺激.
主要成果:
- 在中性和""偏差环境中,年龄的增加与VOT处理的减少相关.
- 在"帐"偏差的背景下没有观察到与年龄相关的时间提示处理下降.
- 句子的上下文显著改变了年龄对时间处理的影响.
结论:
- 噪音中的语音时间处理存在与年龄相关的下降.
- 句子的背景可以显著地影响和补偿与年龄相关的听觉感知缺陷.
- 这些发现凸显了背景信息对于老年人来说在具有挑战性的听力环境中的重要性.
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