Sound Source Localization by Normal-Hearing Listeners, Hearing-Impaired Listeners and Cochlear Implant Listeners
Sound Source Localization by Normal-Hearing Listeners, Hearing-Impaired Listeners and Cochlear Implant Listeners
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DOI：
10.1159/000444740
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发表时间：
2016-01-01
影响因子：
1.6
通讯作者：
Gifford, Rene H.
中科院分区：
文献类型：
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作者：
Dorman, Michael F.;Loiselle, Louise H.;Gifford, Rene H.
目的：我们的主要目的是确定以下患者组的听力定位准确率是否在年轻或老年正常听力(NH)听者的95%以内：(1)双侧助听器听力受损，(2)双峰人工耳蜗组，(3)双侧人工耳蜗组，(4)听力保留组，(5)单侧耳聋组，(6)双侧耳聋和双侧听力保留组。设计：受试者包括57例青年听力障碍者，12例老年听力障碍者，17例配戴助听器者，8例双耳听力障碍者，32例双侧听力障碍者，8例听力保留障碍者，13例单侧失聪听力障碍者，3例双侧听力保持者。在一个有13个扬声器180度弧形排列的消音室中评估了声源定位。结果：NH组的均方根(RMS)误差为6度。第95个百分位数是11度。在16名佩戴双侧助听器的听众中，有9名的得分在正常范围的95%以内。在脑梗塞患者中，只有1人达到了这个范围。双峰CI听众的得分接近概率水平，而单一CI或单一NH耳朵的听众也是如此。(1)双侧顺位、(2)听力保持顺位、(3)单侧失聪顺位、(4)双侧顺位和双侧听力保持的受试者的均方根误差得分都在相似的范围内(平均得分在20-30度误差之间)。结论：现代CI不能恢复CI听者从两只耳朵获取声音信息的正常声源定位水平。(C)2016年S.Karger AG，巴塞尔
Objective: Our primary aim was to determine whether listeners in the following patient groups achieve localization accuracy within the 95th percentile of accuracy shown by younger or older normal-hearing (NH) listeners: (1) hearing impaired with bilateral hearing aids, (2) bimodal cochlear implant (CI), (3) bilateral CI, (4) hearing preservation CI, (5) single-sided deaf CI and (6) combined bilateral CI and bilateral hearing preservation. Design: The listeners included 57 young NH listeners, 12 older NH listeners, 17 listeners fit with hearing aids, 8 bimodal CI listeners, 32 bilateral CI listeners, 8 hearing preservation CI listeners, 13 single-sided deaf CI listeners and 3 listeners with bilateral CIs and bilateral hearing preservation. Sound source localization was assessed in a sound-deadened room with 13 loudspeakers arrayed in a 180-degree arc. Results: The root mean square (rms) error for the NH listeners was 6 degrees. The 95th percentile was 11 degrees. Nine of 16 listeners with bilateral hearing aids achieved scores within the 95th percentile of normal. Only 1 of 64 CI patients achieved a score within that range. Bimodal CI listeners scored at a level near chance, as did the listeners with a single CI or a single NH ear. Listeners with (1) bilateral CIs, (2) hearing preservation CIs, (3) single-sided deaf CIs and (4) both bilateral CIs and bilateral hearing preservation, all showed rms error scores within a similar range (mean scores between 20 and 30 degrees of error). Conclusion: Modern CIs do not restore a normal level of sound source localization for CI listeners with access to sound information from two ears. (C) 2016 S. Karger AG, Basel