Temporal processing and speech perception in noise by listeners with auditory neuropathy.
Temporal processing and speech perception in noise by listeners with auditory neuropathy.
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DOI：
10.1371/journal.pone.0055995
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Narne VK
中科院分区：
文献类型：
--
作者：
Narne VK
本研究评估了患有听觉神经病（AN）的听众在背景噪声存在下的言语感知与时间处理能力之间的关系。该研究包括两个实验。在第一个实验中，使用时间调制传递函数和调制速率为 2 和 10 Hz 的频率调制检测来评估听力正常的听众和 AN 听众的时间分辨率。在第二个实验中，在三个信噪比 (SNR)（0、5 和 10 dB）下评估安静和噪声中的语音感知。结果表明，患有 AN 的听众在幅度调制和频率调制检测方面的表现明显比正常听力听众差，这表明在从信号中提取包络和精细结构线索方面存在显着损害。此外，时间分辨率测量与噪声中语音感知之间存在显着相关性。结果表明，有效处理语音信号的包络和精细结构线索的能力受损可能是 AN 听众在噪声中进行语音感知时面临极端困难的原因。
The present study evaluated the relation between speech perception in the presence of background noise and temporal processing ability in listeners with Auditory Neuropathy (AN). The study included two experiments. In the first experiment, temporal resolution of listeners with normal hearing and those with AN was evaluated using measures of temporal modulation transfer function and frequency modulation detection at modulation rates of 2 and 10 Hz. In the second experiment, speech perception in quiet and noise was evaluated at three signal to noise ratios (SNR) (0, 5, and 10 dB). Results demonstrated that listeners with AN performed significantly poorer than normal hearing listeners in both amplitude modulation and frequency modulation detection, indicating significant impairment in extracting envelope as well as fine structure cues from the signal. Furthermore, there was significant correlation seen between measures of temporal resolution and speech perception in noise. Results suggested that an impaired ability to efficiently process envelope and fine structure cues of the speech signal may be the cause of the extreme difficulties faced during speech perception in noise by listeners with AN.
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