Warner-Czyz Andrea D, Davis Barbara L
The University of Texas at Dallas, Advanced Hearing Research Center, Texas 75235, USA.
Cochlear Implants Int. 2008 Sep;9(3):143-66. doi: 10.1179/cim.2008.9.3.143.
In the first steps toward intelligible speech, children must match sounds they can produce with salient word targets from their environment. Differences in auditory history between normal-hearing children (NH) and children receiving cochlear implants (CI) before the age of 24 months afford examination of the production system and auditory perceptual effects on the emergence of early segmental accuracy. Consonant and vowel inventories, accuracy and error patterns during the single-word period were examined in four NH and four CI children. NH and CI groups differed significantly on consonant accuracy, shifting from omissions to correct productions. Vowel productions improved from partially correct to correct. Both groups improved over time and showed similar patterns for segmental accuracy. Results suggest resilience of the production system to differences in auditory history.
在迈向可理解言语的最初阶段，儿童必须将他们能够发出的声音与来自周围环境中显著的单词目标相匹配。正常听力儿童（NH）与24个月前接受人工耳蜗植入（CI）的儿童在听觉经历上的差异，为研究发音系统以及早期音段准确性出现过程中的听觉感知效应提供了条件。对4名正常听力儿童和4名人工耳蜗植入儿童在单词阶段的辅音和元音清单、准确性及错误模式进行了检查。正常听力组和人工耳蜗植入组在辅音准确性上存在显著差异，从遗漏逐渐转变为正确发音。元音发音从部分正确提高到完全正确。两组都随着时间推移有所进步，并且在音段准确性方面呈现出相似的模式。结果表明发音系统对听觉经历差异具有适应性。
