Speech Perception with Combined Electric and Acoustic Stimulation

电声刺激相结合的语音感知

• 批准号: 8605184
• 负责人: YING-YEE KONG
• 金额: $ 32.43万
• 依托单位: NORTHEASTERN UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-01-15 至 2017-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8605184
• 关键词: Accounting; Acoustic Stimulation; Acoustics; Adult; Algorithms; Attention; Auditory; Child; Cochlear Implants; Cognitive; Complement; Cueing for speech; Cues; Data; Decision Making; Development; Ear; Electric Stimulation; Frequencies; Hearing; Hearing Aids; High-Frequency Hearing Loss; Implant; Individual; Individual Differences; Joints; Knowledge; Lead; Linguistics; Location; Low Prevalence; Measures; Methods; Modeling; Nature; Noise; Operative Surgical Procedures; Patients; Performance; Periodicity; Peripheral; Pitch Perception; Process; Research; Residual state; Role; Semantics; Sensory; Signal Transduction; Source; Speech; Speech Intelligibility; Speech Perception; Stimulus; Stream; Testing; Time; Training; Treatment outcome; Uncertainty; Voice; Weight; base; cognitive function; effective therapy; expectation; implantation; improved; public health relevance; research study; restoration; signal processing; sound; speech recognition

DESCRIPTION (provided by applicant): The benefit of combined electric and acoustic stimulation (EAS) for speech and pitch perception has been demonstrated in a number of previous studies. In some cases, EAS benefit has been documented even when cochlear-implant (CI) patients have very limited residual hearing and speech perception ability in the non-implanted ear. To date, it is still unclear how individual differences in sensory inputs, linguisti context, and cognitive functions influence the degree of benefit provided by EAS, and it is not known whether the typical EAS patient utilizes their residual hearing to its greatest potential. These uncertainties limit clinicians' and patients' ability to make good decisions related to second-ear implantation. In this research, we seek to identify factors that underlie EAS benefit and to investigate methods that could potentially enhance the benefits of residual hearing in EAS users. Unlike the descriptive approach employed by most previous studies, we will take a more comprehensive, model-based approach that considers both the bottom-up and top-down processes that contribute to multi-source speech perception in EAS users. Aim 1 will determine how EAS benefit is influenced by listeners' ability to utilize and optimally weight speech cues presented to the CI and residual hearing ears. Aim 2 will investigate how bottom-up low-frequency acoustic cues and top-down processing (such as the use of linguistic context and the ability to fill in missing speech information) interact to improve speech intelligibility in EAS usrs. Finally, Aim 3 will develop and test speech-enhancement algorithms that are likely to improve speech perception by EAS users. Overall, this research should add substantially to our understanding of 1) the degree of benefit that can be expected from low-frequency residual hearing in EAS, 2) the mechanisms responsible for EAS benefit and the factors that account for its variability across individuals, and 3) the nature of signal-processing algorithms that may enhance speech perception in EAS users.

描述（由申请人提供）：先前的许多研究已经证明了电声刺激组合（EAS）对于语音和音高感知的益处。在某些情况下，即使人工耳蜗 (CI) 患者的未植入耳朵的残余听力和语言感知能力非常有限，EAS 也能带来益处。迄今为止，尚不清楚感觉输入、语言背景和认知功能的个体差异如何影响 EAS 提供的益处程度，并且尚不清楚典型的 EAS 患者是否最大限度地利用其残余听力。这些不确定性限制了临床医生和患者做出与第二耳植入相关的良好决策的能力。在这项研究中，我们试图确定 EAS 益处的潜在因素，并研究可能增强 EAS 用户残余听力益处的方法。与大多数先前研究采用的描述性方法不同，我们将采用更全面的、基于模型的方法，该方法考虑有助于 EAS 用户多源语音感知的自下而上和自上而下的过程。目标 1 将确定听众利用和最佳权重呈现给 CI 和残余听力耳朵的语音提示的能力如何影响 EAS 的益处。目标 2 将研究自下而上的低频声学提示和自上而下的处理（例如语言上下文的使用和填充缺失语音信息的能力）如何相互作用，以提高 EAS 用户的语音清晰度。最后，Aim 3 将开发和测试语音增强算法，这些算法可能会改善 EAS 用户的语音感知。总体而言，这项研究应该大大加深我们对以下方面的理解：1) EAS 中低频残余听力可预期带来的益处程度，2) EAS 益处的机制以及导致个体差异的因素，以及3) 可以增强 EAS 用户语音感知的信号处理算法的性质。