Effects of Lexical Characteristics and Demographic Factors on Mandarin Chinese Open-Set Word Recognition in Children With Cochlear Implants
Effects of Lexical Characteristics and Demographic Factors on Mandarin Chinese Open-Set Word Recognition in Children With Cochlear Implants
复制标题
词汇特征和人口因素对人工耳蜗植入儿童普通话开放式单词识别的影响
DOI：
10.1097/aud.0b013e31826d0bc6
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发表时间：
2013-03-01
期刊：
影响因子：
3.7
通讯作者：
Zhang, Luo
中科院分区：
文献类型：
--
作者：
Liu, Haihong;Liu, Sha;Zhang, Luo
目的：观察多通道人工耳蜗植入后汉语普通话儿童的开放集词识别能力，探讨词汇特征和人口统计学因素（即植入年龄和使用时间）对汉语普通话开放集词识别的影响。设计：参与者为230名患有CIs的语前失聪儿童。着床年龄范围为0.9 ~ 16.0岁，平均3.9岁。采用标准中文单音节词汇邻域测试和多音节词汇邻域测试评价儿童的开集词识别能力。以单词难度和音节长度为两个主要影响因素，通过双向方差分析来描述词汇对开放集单词识别的影响。使用相关/回归模型检验了植入年龄和植入时间对开放集、单词识别性能的影响。结果：第一，双音节“易”词表、双音节“难”词表、单音节“易”词表和单音节“难”词表的平均正确率分别为65.0%、51.3%、58.9%和46.2%。无论是简单表还是难表，双音节词的正确识别率都高于单音节词。其次，CI组在4岁、5岁和6岁的听力年龄分别比听力年龄匹配的正常听力组低26.3%、31.3%和18.8%。CI组与时间年龄匹配的正常听力组之间的相应差距分别为47.6、49.6和42.4。与正常听力组相比，CI组的个体表现差异要大得多。第三，随着种植体使用时间的增加，儿童表现出稳定的改善，特别是种植后1至6年。最后，种植年龄对种植后的词识别能力有显著影响。早期植入的好处在5岁或更小的儿童中尤为明显。结论：第一，普通话儿童CI用户的开放集词识别受到刺激词汇特征的影响。简单词的得分高于难词，双音节词的得分高于单音节词。其次，汉语普通话儿童CI用户在开放集词识别方面表现出稳定的进步，随着种植体使用时间的增加。然而，本研究还表明，即使在使用CI 6年后，与听力正常的同龄人相比，CI儿童在开放集、单词识别表现方面存在显著缺陷。第三，植入年龄对开放集、词识别表现有显著影响。早期植入的儿童表现出比晚期植入的儿童更好的表现。（Ear & Hearing 2013;34;221-228）
Objective: The purpose of this study was to examine the open-set word recognition performance of Mandarin Chinese-speaking children who had received a multichannel cochlear implant (CI) and examine the effects of lexical characteristics and demographic factors (i.e., age at implantation and duration of implant use) on Mandarin Chinese open-set word recognition in these children.Design: Participants were 230 prelingually deafened children with CIs. Age at implantation ranged from 0.9 to 16.0 years, with a mean of 3.9 years. The Standard-Chinese version of the Monosyllabic Lexical Neighborhood test and the Multisyllabic Lexical Neighborhood test were used to evaluate the open-set word identification abilities of the children. A two-way analysis of variance was performed to delineate the lexical effects on the open-set word identification, with word difficulty and syllable length as the two main factors. The effects of age at implantation and duration of implant use on open-set, word-recognition performance were examined using correlational/regressional models.Results: First, the average percent-correct scores for the disyllabic "easy" list, disyllabic "hard" list, monosyllabic "easy" list, and monosyllabic "hard" list were 65.0%, 51.3%, 58.9%, and 46.2%, respectively. For both the easy and hard lists, the percentage of words correctly identified was higher for disyllabic words than for monosyllabic words, Second, the CI group scored 26.3%, 31.3%, and 18.8 % points lower than their hearing-age-matched normal-hearing peers for 4, 5, and 6 years of hearing age, respectively. The corresponding gaps between the CI group and the chronological-age-matched normal-hearing group were 47.6, 49.6, and 42.4, respectively. The individual variations in performance were much greater in the CI group than in the normal-hearing group, Third, the children exhibited steady improvements in performance as the duration of implant use increased, especially 1 to 6 years postimplantation. Last, age at implantation had significant effects on postimplantation word-recognition performance. The benefit of early implantation was particularly evident in children 5 years old or younger.Conclusions: First, Mandarin Chinese-speaking pediatric CI users' open-set word recognition was influenced by the lexical characteristics of the stimuli. The score was higher for easy words than for hard words and was higher for disyllabic words than for monosyllabic words, Second, Mandarin-Chinese-speaking pediatric CI users exhibited steady progress in open-set word recognition as the duration of implant use increased. However, the present study also demonstrated that, even after 6 years of CI use, there was a significant deficit in open-set, word-recognition performance in the CI children compared with their normal-hearing peers. Third, age at implantation had significant effects on open-set, word-recognition performance. Early implanted children exhibited better performance than children implanted later. (Ear & Hearing 2013;34;221-228)