在成年耳植入物使用者中,低频音调灵敏度和语音感知性能,配备精细结构策略
Patrizia Mancini1, Yılmaz Odabaşı2, Ginevra Portanova1
1Department of Sense Organs, Sapienza University of Rome, Rome, Italy.
概括
有精细结构策略的耳植入体使用者表现出更好的低频音调区分和语音识别,特别是在噪音中. 重复率的表演者表现优于刺激地点的表演者,突出了先进的编码策略的好处.
科学领域:
- 听力学和听力科学 听力学和听力科学
- 听力神经科学 听力神经科学
- 生物医学工程 生物医学工程
背景情况:
- 耳植入物 (CI) 用户通过重复率 (RP) 和刺激位置 (PP) 编码来处理音高.
- 精细结构 (FS) 策略旨在改善CI用户对时间精细结构 (TFS) 的感知.
- 了解音调编码机制对于优化CI语音感知至关重要.
研究的目的:
- 调查使用FS策略的CI用户是否可以通过RP区分低频 (LF) 音调变化.
- 为了确定RP表演者与PP表演者相比,是否表现出优越的语音识别.
- 评估单边和双边CI使用对LF音调感知和语音识别的影响.
主要方法:
- 招募了30名经语言失聪的成年CI使用者 (15个单边,15个双边).
- 低频调区分对TFS的敏感性是使用不和音调测试来测量的.
- 使用语音平衡的单词,日常句子 (安静和噪音),以及意大利矩阵测试来评估语音感知.
主要成果:
- 与PP表演者相比,RP表演者表现出明显更好的低频段区分 (较低的JND) (p < 0.001).
- 在多个测试 (WRS,矩阵测试) 中,RP执行者在噪音中的语音识别显著更好.
- 双边CI使用显示,与单耳表现相比,对文字识别分数和矩阵测试表现有显著的好处.
结论:
- 精细结构 (FS) 编码策略增强了耳植入体使用者的时间精细结构 (TFS) 灵敏度.
- 重复率 (RP) 编码在复杂的听觉环境中有利于低频调区分和语音识别.
- 这些发现强调了FS策略对于改善CI用户的听觉感知的重要性.
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