Comparing Bilateral and Single-Sided Deaf Cochlear Implant Recipients in a Novel Speech-in-Noise and Localization Task.

IF 2.6 3区 医学 Q1 OTORHINOLARYNGOLOGY
Obada Abdulrazzak, Nadine I Ibrahim, Gerilyn Jones, Madison V Epperson, Ilhan Onder, Jackson Graves, Carolyn Kroger, Anahita H Mehta, Renee M Banakis Hartl
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引用次数: 0

Abstract

Objective: This study investigated how individuals who have undergone bilateral cochlear implantations (BiCIs) use compensatory head movements to optimize sound localization and speech-in-noise (SIN) performance compared with single-sided deaf users of cochlear implant (SSDCI) and normal hearing controls.

Study design: Nonrandomized, prospective human-subject study.

Setting: Tertiary academic medical center.

Methods: Subjects were presented with Harvard IEEE sentences at varying signal-to-noise ratios (SNRs) in a darkened, semianechoic chamber. An electromagnetic head-tracking system monitored head movement. Outcomes included head movement patterns, localization accuracy, and SIN performance.

Results: BiCI localized targets less accurately with higher SNR-dependent variability than controls, but with greater accuracy than SSDCI. For SIN, SSDCI consistently showed superior performance to the BiCI, with no statistical significance found at any noise condition between SSDCI and controls. Across SNR, BiCI consistently initiated head movements more promptly compared to SSDCI, with controls predictably exhibiting the least delay. All CI recipients exhibited greater absolute displacement overall compared to controls. Although BiCI showed greater displacement compared to SSDCI, their pattern resembled controls, with decreased movement necessary as SNR became more favorable.

Conclusion: When comparing performance for localization and SIN across groups, the same impaired group does not perform most poorly at both binaural tasks; although SSDCI users maintain better speech understanding in noise, BiCIs tend to perform better on locating stimuli in space. Preserved acoustic hearing in one ear does not provide a performance advantage across all tasks. The study underscores the intricate interplay of adaptive behaviors in CI users, showcasing successes and challenges in optimizing binaural hearing performance.

双侧和单侧耳蜗受者在新型语音噪声和定位任务中的比较。
目的:研究双侧人工耳蜗(BiCIs)患者与单侧耳蜗植入者(SSDCI)和正常听力对照者相比,如何使用代偿性头部运动来优化声音定位和噪音语音(SIN)表现。研究设计:非随机、前瞻性人类受试者研究。环境:三级学术医疗中心。方法:受试者在一个黑暗的半消声室中,以不同的信噪比(SNRs)呈现哈佛IEEE句子。一个电磁头部跟踪系统监测头部运动。结果包括头部运动模式、定位精度和SIN性能。结果:与对照组相比,BiCI定位目标的准确性较低,信噪比依赖性变异性较高,但准确性高于SSDCI。对于SIN, SSDCI始终表现出优于BiCI的性能,在任何噪声条件下,SSDCI与对照之间都没有统计学意义。在整个信噪比中,BiCI始终比SSDCI更迅速地启动头部运动,而控制组可以预见地表现出最小的延迟。与对照组相比,所有CI受者总体上表现出更大的绝对位移。尽管与SSDCI相比,BiCI显示出更大的位移,但它们的模式与对照组相似,随着信噪比变得更有利,所需的位移减少。结论:当比较不同组的定位和sinn的表现时,同一受损组在两种双耳任务中的表现都不是最差的;尽管SSDCI使用者在噪声环境中保持更好的语音理解,但bici在定位空间刺激时往往表现更好。单耳保留的声学听力并不能在所有任务中提供性能优势。该研究强调了CI用户适应行为的复杂相互作用,展示了优化双耳听力表现的成功和挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Otolaryngology- Head and Neck Surgery
Otolaryngology- Head and Neck Surgery 医学-耳鼻喉科学
CiteScore
6.70
自引率
2.90%
发文量
250
审稿时长
2-4 weeks
期刊介绍: Otolaryngology–Head and Neck Surgery (OTO-HNS) is the official peer-reviewed publication of the American Academy of Otolaryngology–Head and Neck Surgery Foundation. The mission of Otolaryngology–Head and Neck Surgery is to publish contemporary, ethical, clinically relevant information in otolaryngology, head and neck surgery (ear, nose, throat, head, and neck disorders) that can be used by otolaryngologists, clinicians, scientists, and specialists to improve patient care and public health.
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