Changes in pitch perception with cochlear implants over time

人工耳蜗的音高感知随时间的变化

• 批准号: 7330187
• 负责人: Lina A. Reiss
• 金额: $ 4.96万
• 依托单位: UNIVERSITY OF IOWA
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7330187
• 关键词: Address; Apical; Auditory Perception; Cochlea; Cochlear Implants; Data; Electrodes; Esthesia; Flax; Frequencies; Future; Hearing; Hybrids; Implant; Measures; Nerve; Patients; Performance; Pitch Perception; Predictive Factor; Range; Research; Speech; Speech Perception; Testing; Time; base; clinically relevant; design; experience; neural prosthesis; research study; response; sound

DESCRIPTION (provided by applicant): Summary: Three sets of experiments are proposed that address clinically relevant questions for cochlear implant patients, especially those who have and will receive the Hybrid (short-electrode) cochlear implant. The Hybrid is implanted only into the high-frequency region of the cochlea, but speech information provided through the implant is often from a lower frequency range not necessarily matched to the cochlear frequencies being stimulated. Preliminary data indicates that the pitch associated with stimulation to these basal electrodes can, for some patients, change dramatically over time to a much lower pitch sensation. The information obtained will increase understanding of how auditory perception can adjust to this spectrally shifted frequency-place information from cochlear implants, and how this relates to speech perception performance with the implant. Specifically, the project will: 1) measure pitch sensations in Hybrid cochlear implant users at various times from "hookup" up to 4 years of implant use, to determine if pitch sensations change over time; 2) test whether changing the speech processor frequency range causes pitch sensations to change, to compensate for the spectral shift of the speech; and 3) correlate speech perception performance with pitch sensations at various times, to determine how speech perception relates to pitch sensation. Relevance: The proposed research will study how much pitch perception changes over time, as a result of experience with hearing sounds through a cochlear implant, and whether perceived pitch can be a predictor of future speech understanding with the implant. These findings will have implications for how much the design of neural prostheses can be evaluated based on perceptual responses, which may be altered over time by experience.

描述（由申请人提供）： 摘要：提出了三组实验来解决人工耳蜗患者的临床相关问题，特别是那些已经或将接受混合（短电极）人工耳蜗的患者。混合体仅植入耳蜗的高频区域，但通过植入物提供的语音信息通常来自较低频率范围，不一定与所刺激的耳蜗频率匹配。初步数据表明，对于某些患者来说，与刺激这些基底电极相关的音调可能会随着时间的推移而发生显着变化，变成更低的音调感觉。获得的信息将加深对听觉感知如何适应来自耳蜗植入物的频谱偏移频位信息的理解，以及这与植入物的语音感知性能有何关系。具体来说，该项目将： 1) 测量混合人工耳蜗用户在从“连接”到使用植入物 4 年的不同时间的俯仰感觉，以确定俯仰感觉是否随时间变化； 2) 测试改变语音处理器频率范围是否会导致音调感觉发生变化，以补偿语音的频谱偏移； 3) 将不同时间的语音感知表现与音高感觉相关联，以确定语音感知与音高感觉之间的关系。相关性：拟议的研究将研究由于通过人工耳蜗听到声音的经验，音调感知随着时间的推移而变化有多少，以及感知的音调是否可以预测植入物未来的语音理解。这些发现将对神经假体的设计在多大程度上可以根据感知反应进行评估产生影响，而感知反应可能会随着时间的推移而因经验而改变。