AGING AND AUDITORY CHARACTERISTICS

本项目旨在将联合收割机评估与听力评估相结合， 不同年龄段受试者的能力 以及他们来文中的信息， 健康史。 收集的医疗和认知数据 将对纵向研究中的受试者进行检查 关于听力学和病史数据。 该项目的两个主要目标是： 研究医学、遗传、饮食和 社会因素与年龄相关的听觉功能障碍;以及 B）确定年龄在多大程度上独立于其他因素 病因，导致听力下降 能力. 在过去的一年里，大约有450 来自BLSA的受试者已经测试了所有的 听证程序中的新措施。 这些措施 包括评估纯音听力灵敏度， 噪声环境下的句子理解，自我感知听觉 障碍，鼓室压，声反射阈值， 声反射幅度，声反射适应， 和声反射潜伏期（最后五项测量是 部分声导抗电池， 电生理测试）。 我们最近完成了一项回顾性分析， 听力纵向变化的性别差异 筛选样本的灵敏度，以排除耳科 噪声性听力损失的证据。 我们 计划将这些分析扩展到年龄和性别， 纯音听阈的特定列线图， 记录噪音发展的自然历史 听力损失

This project aims to combine assessment of hearing abilities among subjects of different ages over time, together with information from their communication and health histories. Medical and cognitive data collected from subjects in the longitudinal study will be examined with respect to the audiologic and case history data. The two principal objectives of this project are: A) To study the contribution of medical, genetic, dietary and social factors to age-related auditory dysfunction; and B) To determine to what extent age, independent of other etiologic factors, causes a deterioration in hearing abilities. During the past year, approximately 450 subjects from the BLSA have been tested on all of the new measures in the hearing protocol. These measures include assessment of pure-tone hearing sensitivity, sentence understanding in noise, self-perceived hearing handicap, tympanometry, acoustic reflex thresholds, acoustic reflex magnitude, acoustic reflex adaptation, and acoustic reflex latency (the last five measures are part of the acoustic immittance battery of electrophysiologic tests). We have recently completed a retrospective analysis of gender differences in longitudinal change in hearing sensitivity in a sample screened to exclude otological disorders and evidence of noise-induced hearing loss. We plan to extend these analyses to develop age- and gender- specific nomograms for pure-tone thresholds and to document the natural history of the development of noise- induced hearing loss.