Binaural Spectral Integration with Hearing Loss and Hearing Devices

双耳频谱整合与听力损失和听力设备

• 批准号: 8650004
• 负责人: Lina A. Reiss
• 金额: $ 38.5万
• 依托单位: OREGON HEALTH & SCIENCE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-12-01 至 2018-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8650004
• 关键词: 11 year old; 8 year old; Acoustics; Adult; Adverse effects; Affect; Age; American; Auditory; Bilateral; Brain; Child; Childhood; Chronic; Classification; Clinical; Cochlear Implants; Confusion; Contralateral; Cues; Data; Development; Devices; Discrimination; Ear; Frequencies; Future; Goals; Hearing; Hearing Aids; Individual; Lead; Measures; Methods; Modality; Modeling; Music; Noise; Normal Range; Pattern; Perception; Performance; Peripheral; Pitch Perception; Population; Process; Psychological reinforcement; Rehabilitation therapy; Research; Sensory; Shapes; Speech; Speech Perception; Stimulus; Testing; Time; Training Programs; Uncertainty; Voice; Weight; Work; experience; hearing impairment; human subject; improved; information processing; multisensory; programs; public health relevance; research study; speech processing; speech recognition; voice recognition

Project Summary Approximately 22 million Americans have a hearing impairment. While hearing devices such as hearing aids (HAs) and cochlear implants (CIs) are successful in improving speech recognition for many hearing- impaired (HI) individuals, there is still significant variability in benefit, and speech recognition in noise remains a problem. One factor that may limit benefit is interference between bilaterally worn hearing devices, whether the devices are bilateral HAs, bilateral CIs, or a unilateral CI worn with a HA in the contralateral ear (bimodal CI+HA). In HI individuals, spectral information is not necessarily matched between ears due to asymmetries introduced by hearing loss and hearing device programming. Thus, unlike normal-hearing (NH) listeners, HI listeners integrate mismatched spectral information between ears, in a process that we can call binaural spectral integration (BSI). Our preliminary studies suggest that BSI adapts to reduce perception of interaural spectral mismatch in HI individuals~ binaural fusion is increased so that pitches that differ greatly in frequency between the two ears are still heard as a single percept. However, a side effect of increased binaural fusion is that mismatched spectral information is averaged between ears, which may lead to increased speech perception confusions and worsened frequency discrimination. The long-term goal of this research program is to investigate how BSI differs between HI and NH listeners, and the clinical implications of these differences for rehabilitation. Specifically, in this proposal we will examine 1) differences in binaural fusion between HI and NH listeners, as well as across different device combinations within the HI group: bilateral HAs, bilateral CIs, and bimodal CI+HA~ 2) how abnormal BSI affects the perception of tone and speech stimuli~ and 3) how BSI changes as children develop, because developing brains may adapt BSI differently than adults. The proposed research will increase our understanding of how one aspect of auditory processing, binaural spectral integration, contributes to difficulties with binaural speech perception in HA and CI users. The results will also indicate whether hearing devices should be programmed differently for children than adults. Finally, the results will build the theoretical framework for future planned studies using frequency-specific device programming and training programs to reduce any detrimental BSI, while maintaining or increasing the benefits of binaural processing for speech perception in quiet and noise.

项目概要 大约 2200 万美国人有听力障碍。 当听力设备如助听器 辅助设备（HA）和人工耳蜗（CI）成功地改善了许多听力障碍者的语音识别能力。 受损（HI）个体的益处仍然存在显着差异，并且噪声中的语音识别仍然是一个问题 问题。 可能限制益处的一个因素是双边佩戴的听力设备之间的干扰，无论是 这些设备是双侧 HA、双侧 CI 或在对侧耳朵中佩戴 HA 的单侧 CI（双峰） CI+HA）。 在 HI 个体中，由于不对称，耳朵之间的光谱信息不一定匹配 由听力损失和听力设备编程引入。 因此，与正常听力 (NH) 的听众不同，HI 听众在耳朵之间整合不匹配的频谱信息，这个过程我们可以称为双耳 光谱积分（BSI）。 我们的初步研究表明，BSI 会适应减少耳间感知 HI个体中的频谱不匹配〜双耳融合增加，使得频率差异很大的音调 两耳之间的声音仍然作为单一知觉听到。 然而，增加双耳融合的副作用是 不匹配的频谱信息在耳朵之间进行平均，这可能会导致言语增加 感知混乱和频率歧视恶化。 该研究计划的长期目标是调查 HI 和 NH 听众的 BSI 有何不同， 以及这些差异对康复的临床影响。 具体来说，在本提案中，我们将研究 1) HI 和 NH 听众之间以及不同设备组合之间双耳融合的差异 HI组内：双侧HA、双侧CI、双峰CI+HA~ 2）BSI异常如何影响 对语气和言语刺激的感知~以及 3) BSI 如何随着儿童的发育而变化，因为发育中 大脑对 BSI 的适应方式可能与成人不同。 拟议的研究将增加我们对听觉处理的一方面，双耳如何 频谱整合会导致 HA 和 CI 用户的双耳语音感知困难。 结果 还将表明助听器是否应针对儿童和成人进行不同的编程。 最后， 结果将为未来计划使用特定频率设备的研究构建理论框架 制定计划和培训计划，以减少任何有害的 BSI，同时保持或增加收益 安静和噪声下语音感知的双耳处理。