Long-term trajectories of the development of speech sound production in pediatric cochlear implant recipients.
Long-term trajectories of the development of speech sound production in pediatric cochlear implant recipients.
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DOI：
10.1044/1092-4388(2008/07-0083
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
Lu N
中科院分区：
文献类型：
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作者：
Tomblin JB;Peng SC;Spencer LJ;Lu N
本研究的特点是语言前聋儿童的语音产生的发展，至少有8年的人工耳蜗植入（CI）的经验。27名儿童CI接受者的自发语音样本从年度评估会议进行音素转录。在分段回归模型中评估这些语音样本的准确性。作为一个群体，儿童CI接受者在植入后的语音产生方面表现出稳定的改善，但在6年的设备使用经验后，改善率下降。分段回归模型表明，在植入后的前6年内，估计参与者改善率的斜率在统计学上大于0，但在6年后则不是。儿童CI接受者组在4年器械使用经验后的言语发声准确性合理地预测了他们在5-10年器械使用经验后的言语发声。语前聋儿童的言语发声发展在使用设备6年后趋于稳定，通常在使用设备8年后接近平台期。4年器械使用经验之前的早期语言增长并不能预测以后的增长率或成就水平。然而，在器械使用4年后可以做出良好的预测。
This study characterized the development of speech sound production in prelingually deaf children with a minimum of 8 years of cochlear implant (CI) experience. Twenty-seven pediatric CI recipients' spontaneous speech samples from annual evaluation sessions were phonemically transcribed. Accuracy for these speech samples was evaluated in piecewise regression models. As a group, pediatric CI recipients showed steady improvement in speech sound production following implantation, but the improvement rate declined after 6 years of device experience. Piecewise regression models indicated that the slope estimating the participants' improvement rate was statistically greater than 0 during the first 6 years postimplantation, but not after 6 years. The group of pediatric CI recipients' accuracy of speech sound production after 4 years of device experience reasonably predicts their speech sound production after 5–10 years of device experience. The development of speech sound production in prelingually deaf children stabilizes after 6 years of device experience, and typically approaches a plateau by 8 years of device use. Early growth in speech before 4 years of device experience did not predict later rates of growth or levels of achievement. However, good predictions could be made after 4 years of device use.