Relationship between tone perception and production in prelingually deafened children with cochlear implants.
Relationship between tone perception and production in prelingually deafened children with cochlear implants.
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DOI：
10.1097/mao.0b013e318287ca86
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发表时间：
2013-04
期刊：
影响因子：
--
通讯作者：
Xu L
中科院分区：
文献类型：
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作者：
Zhou N;Huang J;Chen X;Xu L
不同个体的学龄前聋儿人工耳蜗使用者在音调感知和产生方面的表现是相关的。人口统计变量，如植入时的年龄，有助于性能的变化。CI设备中音高信息的不佳表现阻碍了使用声调语言的人工耳蜗使用者的音高感知，并影响了他们对词汇音调的感知。从中国北京招募了110名说普通话的语言前聋CI受试者和125名发育正常的听力正常受试者。词汇音调感知是用计算机化的音调对比测试来测量的。声调生成由以普通话为母语的成年听众判断，并通过声学和人工神经网络进行分析。进行一般线性模型分析以确定导致性能变化的因素。CI受试者在词汇音调感知任务上的正确率约为67%。声学分析显示，CI组产生的音调分化程度明显低于对照组。神经网络评估的音调产生性能与人类听众评估的音调产生性能高度相关。在CI受试者的整体音调感知和生产表现之间存在适度的相关性。种植体使用时间和种植年龄共同解释了约29%的音调感知表现差异。植入时的年龄是CI受试者音调产生表现的唯一显著预测因子。儿童CI使用者的音调产生性能依赖于准确的感知。早期植入预示着词汇音调感知和产生的更好结果。
Performance in tone perception and production are correlated in prelingually-deafened pediatric cochlear implant (CI) users across individuals. Demographic variables, such as age at implantation, contribute to the performance variability. Poor representation of pitch information in CI devices hinders pitch perception and affects perception of lexical tones in cochlear implant users who speak tonal languages. One hundred and ten Mandarin-speaking, prelingually-deafened CI subjects and 125 typically-developing, normal-hearing subjects were recruited from Beijing, China. Lexical tone perception was measured using a computerized tone contrast test. Tone production was judged by native Mandarin-speaking adult listeners and analyzed acoustically and with an artificial neural network. A general linear model analysis was performed to determine factors that accounted for performance variability. CI subjects scored ~67% correct on the lexical tone perception task. The degree of differentiation of tones produced by the CI group was significantly lower than the control group as revealed by acoustic analysis. Tone production performance assessed by the neural network was highly correlated with that evaluated by human listeners. There was a moderate correlation between the overall tone perception and production performance across CI subjects. Duration of implant use and age at implantation jointly explained ~29% of the variance in the tone perception performance. Age at implantation was the only significant predictor for tone production performance in the CI subjects. Tone production performance in pediatric CI users is dependent on accurate perception. Early implantation predicts better outcome in lexical tone perception and production.