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: 9178652
• 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/9178652
• 关键词: 11 year old; 8 year old; Acoustics; Adult; Adverse effects; Affect; Age; American; Auditory; Bilateral; Binaural; 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; auditory processing; experience; experimental study; hearing impairment; human subject; improved; information processing; multisensory; programs; public health relevance; speech processing; speech recognition; voice recognition

DESCRIPTION (provided by applicant): 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 contralatera 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 w 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.

描述（由申请人提供）：大约2200万美国人有听力障碍。尽管助听器（HAS）和人工耳蜗（CI）等听力设备成功地改善了许多听力受损（HI）个体的语音识别，但福利仍然存在很大的差异，而噪音中的语音识别仍然是一个问题。可能限制益处的一个因素是双侧磨损的听力设备之间的干扰，无论设备是双侧的，双侧顺式的还是在相反的耳朵中戴上HA的单侧CI（双峰CI+HA）。在HI个体中，由于听力损失和听力设备编程引入的不对称性，不一定会在耳朵之间匹配光谱信息。因此，与正常听觉（NH）听众不同，HI听众在耳朵之间可以称为双耳光谱整合（BSI）的过程中整合了不匹配的光谱信息。我们的初步研究表明，BSI适应HI个体对HI个体的听觉不匹配的看法。双耳融合的增加，因此在两个耳朵之间的频率上有很大差异的音高仍然是单一感知的。但是，双耳融合增加的副作用是，耳朵之间平均不匹配的光谱信息，这可能导致语音感知混乱增加并加剧频率歧视。 该研究计划的长期目标是研究HI和NH听众之间的BSI以及这些差异对康复的临床意义的不同。具体而言，在此提案中，w将检查1）HI和NH听众之间双耳融合的差异，以及HI组内的不同设备组合：双边具有双侧CIS和Biliendal CI和Bimodal CI+HA； 2）异常BSI如何影响语气和语音刺激的感知； 3）随着儿童的发展，BSI的变化如何变化，因为大脑的适应BSI可能与成年人不同。拟议的研究将提高我们对听觉处理，双耳光谱整合的一个方面如何导致HA和CI使用者双耳语音感知的困难。结果还将表明听力设备的编程是否应与成人不同。最后，结果将使用特定于频率的设备编程和培训计划来为未来计划的研究建立理论框架，以减少任何有害的BSI，同时保持或增加双耳处理的益处，以在安静和噪音中进行语音感知。