Binaural Pitch Fusion in Children With Normal Hearing, Hearing Aids, and Cochlear Implants.
Binaural Pitch Fusion in Children With Normal Hearing, Hearing Aids, and Cochlear Implants.
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DOI：
10.1097/aud.0000000000000874
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发表时间：
2020
期刊：
影响因子：
3.7
通讯作者：
Reiss, Lina A. J.
中科院分区：
文献类型：
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作者：
Hartling, Curtis L.;Fowler, Jennifer R.;Stark, Gemaine N.;Glickman, Bess;Eddolls, Morgan;Oh, Yonghee;Ramsey, Katrina;Reiss, Lina A. J.
双耳音高融合是将两耳之间不同音高的刺激感知整合成单个听觉图像。使用助听器（HA）或人工耳蜗（CI）的成年人经常经历异常宽的双耳音高融合，使得音高相差多达3-4个八度的声音在两耳之间融合，导致频谱平均和语音感知干扰。本研究的主要目的是测量不同听力设备组合的儿童的双耳音高融合，并比较各组和成人的结果。第二个目标是研究双耳音高融合与双耳音高差异或音高匹配范围的关系，这是一种衡量连续音高辨别力的方法。在年龄在6.1-11.1岁之间的儿童中测量双耳音高融合，双侧HA（n=9），双峰CI（n=10），双侧CI（n=17），以及正常听力（NH）儿童（n=21）。根据设备组合，刺激是纯音或电脉冲序列传递到各个电极。融合范围的测量使用同时的，双耳两分呈现的参考和比较刺激在相对的耳朵，并改变比较刺激，以找到与参考刺激融合的范围。双耳音高匹配功能的测量使用顺序介绍的参考和比较刺激，并改变比较刺激，找到音高匹配中心和范围。双侧HA儿童的双耳音高融合比NH、双峰CI或双侧CI儿童显著更宽。NH和双侧HA的儿童，而不是双峰或双侧CI的儿童，与具有相同听力状态和设备配置的成人相比，具有显著更广泛的融合。在双侧CI儿童中，融合范围与几个变量相关，这些变量也彼此相关：CI前第二只植入耳的PTA，以及既往双侧HA、双峰CI或双侧CI经历的持续时间。在融合范围和音高匹配差异或范围之间没有观察到任何关系。研究结果表明，双耳音高融合在这个年龄段仍在发展，并取决于听力设备的组合，而不是双耳音高差异或辨别力。听力损失儿童比听力正常儿童有更广泛的融合。差异取决于器械组合。
Binaural pitch fusion is the perceptual integration of stimuli that evoke different pitches between the ears into a single auditory image. Adults who use hearing aids (HAs) or cochlear implants (CIs) often experience abnormally broad binaural pitch fusion, such that sounds differing in pitch by as much as 3–4 octaves are fused across ears, leading to spectral averaging and speech perception interference. The main goal of this study was to measure binaural pitch fusion in children with different hearing device combinations, and compare results across groups and with adults. A second goal was to examine the relationship of binaural pitch fusion to interaural pitch differences or pitch match range, a measure of sequential pitch discriminability. Binaural pitch fusion was measured in children between the ages of 6.1–11.1 years with bilateral HAs (n=9), bimodal CI (n=10), bilateral CIs (n=17), as well as normal-hearing (NH) children (n=21). Depending on device combination, stimuli were pure tones or electric pulse trains delivered to individual electrodes. Fusion ranges were measured using simultaneous, dichotic presentation of reference and comparison stimuli in opposite ears, and varying the comparison stimulus to find the range that fused with the reference stimulus. Interaural pitch match functions were measured using sequential presentation of reference and comparison stimuli, and varying the comparison stimulus to find the pitch match center and range. Children with bilateral HAs had significantly broader binaural pitch fusion than children with NH, bimodal CI, or bilateral CIs. Children with NH and bilateral HAs, but not children with bimodal or bilateral CIs, had significantly broader fusion than adults with the same hearing status and device configuration. In children with bilateral CIs, fusion range was correlated with several variables that were also correlated with each other: PTA in the second implanted ear prior to CI, and duration of prior bilateral HA, bimodal CI, or bilateral CI experience. No relationship was observed between fusion range and pitch match differences or range. The findings suggest that binaural pitch fusion is still developing in this age range, and depends on hearing device combination but not on interaural pitch differences or discriminability. Children with hearing loss have broader fusion than children with normal-hearing. Differences depend on device combination.