双边演讲引发的信封 接下来的回应: 区域间不对称性的好处和影响
Vijayalakshmi Easwar1, Michael Chesnaye1, David W Purcell2,3
1Communication Sciences, National Acoustic Laboratories, Sydney, New South Wales, Australia.
Ear and hearing
|February 10, 2026
概括
与单边刺激相比,双边刺激显著增强了语音唤起的信封以下反应 (EFR),特别是在听力值附近. 慢速的EFR不受时间差异的影响,这表明它们在单边助听器中具有实用性.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 听力科学 听力科学
背景情况:
- 语音唤起的信封后的响应 (EFRs) 评估辅助语音访问.
- 大多数研究使用单边刺激,不反映典型的双边倾听.
- 调查双边与单边刺激以及耳声间不对称性至关重要.
研究的目的:
- 为了确定双边刺激对单边刺激对EFR振幅的好处.
- 评估区间时间差异 (ITD) 和区间水平差异 (ILD) 对EFR的影响.
- 了解对助听器装配和听觉处理的影响.
主要方法:
- 在42名听力正常的成年人中使用语音标记 /sashi/或 /sa/.
- 在不同声压水平 (SPL) 上单边和双边呈现的刺激.
- 模拟ITD和ILD以模拟单边助听器配件和听力值不对称.
主要成果:
- 双边的f0 EFR振幅比单边的80-127%大;慢速的EFR增加了20-46%.
- 一个5.6毫秒的ITD显著减弱了f0 EFR,但并没有减缓速度的EFR.
- 如果听力足够,双边优势仍然存在于ILDs;观察到双耳相互作用.
结论:
- 双边刺激为EFR振幅提供了显著的优势,特别是在听力值附近.
- 慢速EFR对ITDs来说很强大,建议在单方面助听器场景中使用它们,以避免虚假负面.
- 双边EFR证明了双耳相互作用,推进了客观的听觉评估.
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