Sound Source Localization and Speech Understanding in Complex Listening Environments by Single-sided Deaf Listeners After Cochlear Implantation.
Sound Source Localization and Speech Understanding in Complex Listening Environments by Single-sided Deaf Listeners After Cochlear Implantation.
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DOI：
10.1097/mao.0000000000000841
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发表时间：
2015-09
期刊：
影响因子：
--
通讯作者：
Gifford RH
中科院分区：
文献类型：
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作者：
Zeitler DM;Dorman MF;Natale SJ;Loiselle L;Yost WA;Gifford RH
评估单侧人工耳蜗植入治疗单侧耳聋（SSD）后在复杂聆听环境中声源定位和言语理解能力的改善情况。
非随机、开放、前瞻性病例系列
三级转诊中心
对9名单侧耳聋接受单侧人工耳蜗植入（SSD - CI）的受试者进行了测试。声源定位任务的参考组包括年轻（n = 45）和年长（n = 12）的听力正常（NH）受试者以及27名双侧人工耳蜗植入（BCI）受试者。
单侧人工耳蜗植入
在受试者前方180度弧形范围内用13个扬声器测试声源定位。让受试者坐在呈360度排列的8个扬声器的音响系统中测试言语理解能力。从每个扬声器播放最初在餐厅录制的定向适宜噪声。使用Azbio句子测试来测试噪声中的言语理解能力，并使用均方根误差对声源定位进行量化。
所有人工耳蜗植入受试者的声源定位能力均比正常人差。SSD - CI受试者的得分呈双峰分布——6名受试者的得分接近BCI受试者得分的平均值，而3名受试者的得分刚好在听力正常者的第95百分位数之外。当信号从人工耳蜗植入侧呈现时，在餐厅环境中的言语理解能力有显著提高。
SSD的人工耳蜗植入可以提高儿童和成人在复杂聆听环境中的言语理解能力以及声源定位能力。在声源定位任务中，SSD - CI患者通常表现与BCI患者一样好，并且在某些情况下，得分可达到正常表现的上限。
To assess improvements in sound source localization and speech understanding in complex listening environments following unilateral cochlear implantation for single-sided deafness (SSD). Non-randomized, open, prospective case series Tertiary referral center Nine subjects with a unilateral cochlear implant (CI) for SSD (SSD-CI) were tested. Reference groups for the task of sound source localization included young (n=45) and older (n=12) normal hearing (NH) subjects and 27 bilateral CI (BCI) subjects. Unilateral cochlear implantation Sound source localization was tested with 13 loudspeakers in a 180 arc in front of the subject. Speech understanding was tested with the subject seated in an 8-loudspeaker sound system arrayed in a 360-degree pattern. Directionally appropriate noise, originally recorded in a restaurant, was played from each loudspeaker. Speech understanding in noise was tested using the Azbio sentence test and sound source localization quantified using root mean square error. All CI subjects showed poorer-than-normal sound source localization. SSD-CI subjects showed a bimodal distribution of scores - six subjects had scores near the mean of those obtained by BCI subjects, while three had scores just outside the 95th percentile of NH listeners. Speech understanding improved significantly in the restaurant environment when the signal was presented to the side of the CI. Cochlear implantation for SSD can offer improved speech understanding in complex listening environments and improved sound source localization in both children and adults. On tasks of sound source localization, SSD-CI patients typically perform as well as BCI patients and, in some cases, achieve scores at the upper boundary of normal performance.