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）：在许多先前的研究中已经证明了电气和声学刺激（EAS）对语音和音调感知的好处。在某些情况下，即使耳蜗（CI）患者在非植入的EAR中的残留听力和语音感知能力非常有限，EAS的益处也已被记录在案。迄今为止，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提供的收益程度，并且尚不清楚典型的EAS患者是否利用其残留听力具有其最大潜力。这些不确定性限制了临床医生和患者的能力，可以做出与第二次植入有关的良好决定。在这项研究中，我们试图确定基于EAS受益的因素，并调查有可能增强EAS用户剩余听力益处的方法。与大多数先前研究所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，该方法考虑了自下而上的和自上而下的过程，这些过程促进了EAS用户的多源语音感知。 AIM 1将确定EAS收益如何受到听众利用和最佳体重语音提示和剩余听力耳朵的能力的影响。 AIM 2将调查自下而上的低频声音提示和自上而下的处理（例如使用语言环境以及填写缺失语音信息的能力）以提高EAS USR中的语音清晰度。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，这项研究应大大增加我们对1）在EA中低频剩余听力所期望的收益程度，2）负责EA的益处的机制以及占个人跨个体变异性的因素； 3）信号处理算法的性质，可以增强EAS使用者的语音感知。