Representation of amplified speech at cortical level in good and poor hearing aid performers.
Representation of amplified speech at cortical level in good and poor hearing aid performers.
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DOI：
10.1016/j.bjorl.2019.02.010
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发表时间：
2020-09
影响因子：
2.2
通讯作者：
Puttabasappa, Manjula
中科院分区：
文献类型：
--
作者：
Shetty, Hemanth Narayan;Puttabasappa, Manjula
助听器使用者拒绝自己的助听器，因为他们对背景噪音感到恼火。不满的原因从助听器麦克风到听觉通路上神经元的完整性，无所不包。在这个预览中，助听器的输出被记录在耳道水平和听觉皮质，助听器使用者好的和差的，根据可接受的噪声水平进行分类。目的：研究助听器性能好与差的受试者放大语音的表征。60例中度双侧感音神经性听力障碍的受试者，年龄15~65岁，按助听器使用情况分为助听器良好组(n=35)和助听器组差组(n=25)。进行缝隙检测试验和辅助信噪比50。另外，在65dBSPL下记录耳道声学测量和皮层听觉诱发电位。助听器对反映在包络差异指数中的语音的时间对比度的影响最小。虽然两组的时间损害、放大语音的声学特征和SNR50得分相似，但表现良好的人的辅助皮层听觉诱发电位的潜伏期和波幅明显早于表现差的人。此外，声学变化复合体的2N1和2P2成分的潜伏期预测了根据烦扰程度分类的表现好和差的人。此外，后续发现助听器的使用与对噪音的接受程度有关。愿意接受来自不愿接受噪音的人的参与者在听觉皮质有明显的微妙生理变化，这支持助听器的使用。
Hearing aid users reject their own hearing aid because of annoyance with background noise. The reason for dissatisfaction is located anywhere from the hearing aid microphone to the integrity of neurons along the auditory pathway. In this preview, the output of hearing aid was recorded at the level of ear canal and at auditory cortex in good and poor hearing aid users, who were classified using acceptable noise level. To study the representation of amplified speech in good and poor hearing aid performers. A total of 60 participants (age ranged 15–65 years) with moderate bilateral sensorineural hearing impairment grouped into good (n = 35) and poor (n = 25) hearing aid performers. Gap detection test and aided SNR 50 were administered. In addition, ear canal acoustic measures and cortical auditory evoked potentials were recorded in unaided and aided conditions at 65 dB SPL. Hearing aid minimally alters temporal contrast of speech reflected in envelope difference index. Although having similar temporal impairment, acoustic characteristics of amplified speech sounds and SNR 50 scores from both groups, the aided cortical auditory evoked potentials surprisingly showed significant earlier latencies and higher amplitudes in good performers than poor performers. In addition, good and poor performers classified based on annoyance level was predicted by latencies of 2N1 and 2P2 components of acoustic change complex. Further, a follow-up revealed hearing aid use has relation with acceptance towards noise. Participants who are willing to accept noise from those who are not willing to accept noise have subtle physiological changes evident at the auditory cortex, which supports the hearing aid usage.
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