AUDITORY DEVELOPMENT IN EARLY-AMPLIFIED CHILDREN

描述(摘自申请者的摘要)：目前信息很少 可用来描述早期听觉干预的过程(符合 (放大)和由此产生的以听觉为基础的结果。这个 这个项目的长期目标是研究言语感知、言语 听力损失儿童的语言产出和口语技能 接受早期、准确的听力学评估和适当的适配 放大。该项目还将提供关于以下进程的信息 婴儿听力损失的准确估计以及婴儿的发育变化 听力和耳朵结构，以及它们与放大的关系 贴合过程。一大群被确认为听力损失的婴儿 新生儿听力筛查计划将有预测的听力阈值 频率特异性听性脑干反应(ABR)。这些门槛将是 与适合婴儿的规定技术配合使用，以进行适配和验证 放大的部分。婴儿将参加亲子教育，并 长达四年的跟踪调查。年未接受听力损失筛查的幼儿 2岁以下有听力损失的新生儿期 也将适合放大并作为受试者跟踪。言语知觉 言语产出和口语将随着年龄的增长而进行评估- 每隔一段时间采取适当措施。重要信息可能 影响放大和听觉结果之间的关系，例如 教育干预的类型和时间、认知状况、父母 涉案情况、社会经济状况和其他医疗条件 记录并在数据分析中使用。本研究的主要目的是1) 优化扩增时年龄关系的确定(S) 听力损失与言语知觉、言语产生、 和听力损失儿童的口语；以及，2)确定时间 这一发展的进程。次要目标是确定以下各项的准确性 ABIR对照标准预测新生儿听力阈值 6个月后获得的行为测听阈值，以及 确定发育相关的耳道体积和耳道体积变化的程度 助听器上的共振指标性指标。

DESCRIPTION (from applicant's abstract): Little information is presently available describing the process of early auditory intervention (fitting of amplification) and resultant auditory-based outcomes in young children. The long-term objective of this project is to investigate speech perception, speech production, and spoken language skills in children with hearing loss who have received early, accurate audiologic assessment and appropriate fitting of amplification. This project will also provide information on the process of accurate hearing loss estimation in infants as well as developmental changes in audition and ear structures and how these may relate to the amplification fitting process. A large group of infants identified with hearing loss in a neonatal hearing screening program will have hearing thresholds predicted by frequency-specific auditory brainstem response (ABR). These thresholds will be used with infant-appropriate prescriptive techniques for fitting and validation of amplification. Infants will be enrolled in parent-infant education and followed for up to four years. Young children not screened for hearing loss in the newborn period who are identified with hearing loss up to 2 years of age will also be fit with amplification and followed as subjects. Speech perception and speech production as well as spoken language will be assessed with age- appropriate measures at regular intervals. Important information that may influence the relationship between amplification and auditory outcomes, such as type and timing of educational intervention, cognitive status, parental involvement, socio-economic status and other medical conditions will be documented and used in data analysis. Primary aims of this study are to 1) determine the relationship(s) between age at time of optimized amplification fitting and degree of hearing loss with speech perception, speech production, and spoken language in children with hearing loss; and, 2) determine the time course of this development. Secondary aims are to establish the accuracy of audiometric threshold prediction in newborns using ABIR against standard behavioral audiometric thresholds obtained after 6 months of age, and to determine the extent of developmentally related changes in ear canal volume and resonance on hearing aid prescriptive targets.