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)：先前的一些研究已经证明了电和声联合刺激(EAS)对语音和音调感知的好处。在某些情况下，即使人工耳蜗术(CI)患者在非植入耳的残余听力和言语感知能力非常有限，EAS也有记录在案。到目前为止，尚不清楚感觉输入、语言环境和认知功能的个体差异如何影响EAS提供的益处程度，也不知道典型的EAS患者是否最大限度地利用了他们的残余听力。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定的能力。在这项研究中，我们试图找出影响EAS益处的因素，并调查有可能提高EAS使用者残留听力益处的方法。与以往大多数研究采用的描述性方法不同，我们将采用一种更全面的、基于模型的方法，同时考虑自下而上和自上而下的过程，这些过程有助于EAS用户的多源语音感知。目标1将确定EAS收益如何受到听者利用和最佳加权呈现给CI和剩余听力的耳朵的能力的影响。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(如使用语言上下文和填充缺失的语音信息的能力)如何相互作用来提高EAS用户的语音可理解性。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，这项研究将大大增加我们对以下方面的理解：1)低频残留听力在EAS中可预期的受益程度，2)EAS受益的机制和解释其在不同个体之间差异的因素，以及3)可能增强EAS用户语音感知的信号处理算法的性质。