Effects of Auditory Neuropathy and Cochlear Hearing Loss on Speech Perception

项目总结 获得高质量的听觉输入对于成功的言语和语言发展至关重要。听力损失 由听神经病(AN)或耳蜗性听力损失(C-HL)引起的听觉信号退化，但在 不同的方式。在考虑了听力后，患有C-HL的听者通常表现出正常或接近正常的颞叶 伴随着光谱分辨率受损的分辨率。许多收听者的显示时间分辨率较差。 这一点很重要，因为听众对定时和频率提示的访问方式的不同会影响对 同时支持语言习得和语音感知的声学-语音提示。拟议的研究 将评估退化的频谱和时间分辨率对语音的短期和长期影响 听觉障碍儿童与听力正常儿童的知觉和语音意识比较。 评估将包括光谱和时间分辨率的心理物理测试以及语音感知 识别依赖于元音或辅音感知的单词。本文件中概述的培训计划 奖学金建议包括在研究设计、信号检测、演讲等领域的技能发展 感知、语言发展、统计建模、职业网络发展和道德行为 研究的成果。北卡罗来纳大学和Boys town National Research的联合资源 医院提供独一无二的技术培训和职业发展机会 临床和研究工作成功整合的典范。

PROJECT SUMMARY Access to high-quality auditory input is crucial for successful speech and language development. Hearing losses caused by Auditory Neuropathy (AN) or Cochlear Hearing Loss (C-HL) degrade the auditory signal, but in different ways. After accounting for audibility, listeners with C-HL often exhibit normal or near-normal temporal resolution accompanied by impaired spectral resolution. Many listeners with AN display poor temporal resolution. This is important because differences in a listener’s access to timing and frequency cues can affect sensitivity to acoustic-phonetic cues that support both language acquisition and speech perception. The proposed research will evaluate the short-term and long-term effects of degraded spectral and temporal resolution on speech perception and phonological awareness in children with AN and C-HL compared to children with normal hearing. Evaluation will involve psychophysical tests of spectral and temporal resolution as well as speech perception for words in which recognition relies on either vowel or consonant perception. The training plan outlined in this fellowship proposal includes skill development in the areas of research design, signal detection, speech perception, language development, statistical modeling, professional network development, and ethical conduct of research. The combined resources of The University of North Carolina and Boys Town National Research Hospital provide unique opportunities for technical training and career development, in addition to unparalleled models of the successful integration of clinical and research endeavors.