Variability in Speech Recognition for Adults with Cochlear Implants: Bottom-up and Top-down Factors

人工耳蜗成人语音识别的变异性：自下而上和自上而下的因素

• 批准号: 9314162
• 负责人: Aaron C Moberly
• 金额: $ 18.68万
• 依托单位: OHIO STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-04-01 至 2022-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9314162
• 关键词: Acquired Deafness; Address; Adult; Affect; Age; Attention; Auditory; Auditory system; Categories; Clinical; Cochlear Implants; Cochlear implant procedure; Cognitive; Complex; Counseling; Devices; Diagnostic; Enrollment; Exhibits; Future; Growth; Hearing; Hearing Aids; Implant; Individual; Individual Differences; K-Series Research Career Programs; Knowledge; Language; Light; Linguistics; Measures; Mentors; Modeling; Operative Surgical Procedures; Outcome; Patients; Performance; Peripheral; Population; Postoperative Period; Process; Protocols documentation; Rehabilitation therapy; Research; Research Personnel; Research Priority; Research Project Grants; Semantics; Short-Term Memory; Signal Transduction; Source; Speech; Speech Sound; Testing; Training; United States; aging population; auditory deprivation; base; cognitive function; cognitive process; cognitive skill; design; experience; hearing impairment; implantation; improved; improved outcome; individual patient; lexical; neglect; peer; phonology; phrases; preoperative counseling; processing speed; programs; rehabilitation strategy; sensory input; skills; speech recognition; success; syntax; temporal measurement

Project Summary/Abstract: Acquired hearing loss is becoming increasingly common, especially with the growth of the aging population. For many individuals, hearing loss is severe enough to warrant cochlear implantation. While many adults with cochlear implants (CIs) understand speech well through their devices, enormous unexplained variability exists in speech recognition outcomes. Unfortunately, because of this unexplained variability, clinicians are unable to predict how an individual will perform with a CI, to explain why someone has poor speech recognition with a CI, or to design appropriate rehabilitation strategies to help an individual with poor performance. Currently, only half of this outcome variability can be explained, and those factors that have been found to explain variability are limited primarily to “bottom-up” auditory sensitivity processes related to the CI itself, or the condition of the peripheral auditory system. However, it is likely that “top-down” cognitive and linguistic factors assist CI users to recognize speech. These factors should explain additional variability in CI outcomes, but they have not previously been a research focus in adult CI users. This project capitalizes on the expertise of investigators, mentors, and consultants with broad experience studying bottom-up and top-down processes. The overall project objective is to determine how top-down skills relate to speech recognition for adult CI users, how these skills interact with bottom-up processes, and how the experience of auditory deprivation affects top-down abilities. Aim 1 will examine the contributions of bottom-up auditory sensitivity and top-down linguistic knowledge on recognition of speech materials. Aim 2 will investigate the effects of top-down cognitive skills on sentence recognition. Aim 3 will compare top-down cognitive and linguistic skills between adult CI users and age- matched normal-hearing peers, which will reveal the effects of auditory deprivation on these top-down abilities. The findings from this research project will have important theoretical implications because they will shed light on the processes used by adults with hearing loss to recognize speech, as well as the effects of auditory deprivation on relevant top-down skills. The findings and training provided by the proposed career development award will enhance the PIs prospects as a future independent investigator seeking to improve outcomes for CI users. Results will lay the groundwork for future studies incorporating individualized rehabilitation protocols for adults with CIs to optimize their speech recognition performance.

项目摘要/摘要： 获得的听力损失越来越普遍，尤其是随着衰老的增长 人口。对于许多人来说，听力损失足够严重，可以保证人工耳蜗植入。尽管 许多具有人工耳蜗的成年人（CIS）通过其设备很好地了解语音， 语音识别结果中存在无法解释的可变性。不幸的是，由于这个未知 可变性，临床医生无法预测个人如何与CI一起表现，以解释为什么有人 CI的语音认可差，或设计适当的康复策略以帮助 表现不佳的个人。目前，只有一半的结果可变性可以解释，并且 那些发现可变性的因素主要限于“自下而上”的听觉 敏感性过程与CI本身或外围听觉系统的状况有关。但是，它 “自上而下”的认知和语言因素可能有助于CI用户识别语音。这些因素 应该解释CI结果的其他差异，但它们以前并不是研究重点 成人CI使用者。该项目利用了调查人员，导师和顾问的专业知识 研究自下而上和自上而下的过程的广泛经验。总体项目目标是 确定自上而下的技能与成人CI用户的语音识别的关系，这些技能如何与 自下而上的过程以及听觉剥夺的经验如何影响自上而下的能力。目标1意志 检查自下而上的听觉敏感性和自上而下的语言知识 识别语音材料。 AIM 2将研究自上而下的认知技能对句子的影响 认出。 AIM 3将比较成人CI使用者与年龄之间自上而下的认知和语言技能 - 匹配的正常听觉同伴，这将揭示听觉剥夺对这些自上而下的影响 能力。该研究项目的发现将具有重要的理论意义，因为它们 会阐明成年人听力损失以识别语音的过程以及效果 相关自上而下技能的听觉剥夺。提议提供的发现和培训 职业发展奖将提高PIS的前景，因为未来的独立调查员寻求 改善CI用户的结果。结果将为以后的研究奠定基础 为具有CI的成年人的个性化康复方案，以优化其语音识别表现。