首页> 美国卫生研究院文献>British Journal of Pharmacology >Consonant and Vowel Confusions in Well-Performing Children and Adolescents With Cochlear Implants, Measured by a Nonsense Syllable Repetition Test
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Consonant and Vowel Confusions in Well-Performing Children and Adolescents With Cochlear Implants, Measured by a Nonsense Syllable Repetition Test

机译:用无意义的音节重复测试测量表现良好的儿童和青少年的人工耳蜗的辅音和元音混淆

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摘要

Although the majority of early implanted, profoundly deaf children with cochlear implants (CIs), will develop correct pronunciation if they receive adequate oral language stimulation, many of them have difficulties with perceiving minute details of speech. The main aim of this study is to measure the confusion of consonants and vowels in well-performing children and adolescents with CIs. The study also aims to investigate how age at onset of severe to profound deafness influences perception. The participants are 36 children and adolescents with CIs (18 girls), with a mean (SD) age of 11.6 (3.0) years (range: 5.9–16.0 years). Twenty-nine of them are prelingually deaf and seven are postlingually deaf. Two reference groups of normal-hearing (NH) 6- and 13-year-olds are included. Consonant and vowel perception is measured by repetition of 16 bisyllabic vowel-consonant-vowel nonsense words and nine monosyllabic consonant-vowel-consonant nonsense words in an open-set design. For the participants with CIs, consonants were mostly confused with consonants with the same voicing and manner, and the mean (SD) voiced consonant repetition score, 63.9 (10.6)%, was considerably lower than the mean (SD) unvoiced consonant score, 76.9 (9.3)%. There was a devoicing bias for the stops; unvoiced stops were confused with other unvoiced stops and not with voiced stops, and voiced stops were confused with both unvoiced stops and other voiced stops. The mean (SD) vowel repetition score was 85.2 (10.6)% and there was a bias in the confusions of [i:] and [y:]; [y:] was perceived as [i:] twice as often as [y:] was repeated correctly. Subgroup analyses showed no statistically significant differences between the consonant scores for pre- and postlingually deaf participants. For the NH participants, the consonant repetition scores were substantially higher and the difference between voiced and unvoiced consonant repetition scores considerably lower than for the participants with CIs. The participants with CIs obtained scores close to ceiling on vowels and real-word monosyllables, but their perception was substantially lower for voiced consonants. This may partly be related to limitations in the CI technology for the transmission of low-frequency sounds, such as insertion depth of the electrode and ability to convey temporal information.
机译:尽管大多数接受耳蜗植入(CIs)的早期植入,重度聋的儿童在受到适当的口头语言刺激后会发出正确的发音,但其中许多人在感知微小的语音细节方面存在困难。这项研究的主要目的是测量表现良好的儿童和青少年具有CI的辅音和元音的混淆。该研究还旨在调查严重至严重耳聋的发病年龄如何影响知觉。参与者为36名具有CI的儿童和青少年(18名女孩),平均(SD)年龄为11.6(3.0)岁(范围:5.9-16.0岁)。其中有29例为舌聋,而7例为舌聋。包括两个正常听觉(NH)6岁和13岁的参考人群。辅音和元音感知是通过在开放式设计中重复16个双音节元音-辅音-元音废话和9个单音节辅音-元音-废话词来测量的。对于具有CI的参与者,辅音大多与音调和方式相同的辅音相混淆,平均(SD)语音辅音重复得分为63.9(10.6)%,大大低于平均(SD)清音辅音得分为76.9 (9.3)%。停车位有清音偏差;无声音的站点与其他无声音的站点而不是带语音的站点混淆,有语音的站点与无声音的站点和其他有语音的站点混淆。平均(SD)元音重复分数是85.2(10.6)%,在[i:]和[y:]的混淆中存在偏差; [y:]被视为[i:]的频率是正确重复[y:]的频率的两倍。亚组分析显示,聋前和舌后参与者的辅音得分在统计学上没有显着差异。对于NH参与者,辅音重复分数明显更高,有声和无声辅音重复分数之间的差异明显低于具有CI的参与者。具有CI的参与者在元音和实词单音节上获得的分数接近最高分数,但是他们对有声辅音的感知能力明显较低。这可能部分与CI技术中低频声音传输的局限性有关,例如电极的插入深度和传达时间信息的能力。

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