Tye-Murray N, Spencer L, Bedia E G, Woodworth G
Department of Otolaryngology, Head and Neck Surgery, University of Iowa Hospital, Iowa City, USA.
J Speech Hear Res. 1996 Jun;39(3):604-10. doi: 10.1044/jshr.3903.604.
Twenty children who have worn a Cochlear Corporation cochlear implant for an average of 33.6 months participated in a device-on/off experiment. They spoke 14 monosyllabic words three times each after having not worn their cochlear implant speech processors for several hours. They then spoke the same speech sample again with their cochlear implants turned on. The utterances were phonetically transcribed by speech-language pathologists. On average, no difference between speaking conditions on indices of vowel height, vowel place, initial consonant place, initial consonant voicing, or final consonant voicing was found. Comparisons based on a narrow transcription of the speech samples revealed no difference between the two speaking conditions. Children who were more intelligible were no more likely to show a degradation in their speech production in the device-off condition than children who were less intelligible. In the device-on condition, children sometimes nasalized their vowels and inappropriately aspirated their consonants. Their tendency to nasalize vowels and aspirate initial consonants might reflect an attempt to increase proprioceptive feedback, which would provide them with a greater awareness of their speaking behavior.
二十名平均佩戴科利耳公司人工耳蜗33.6个月的儿童参与了一项设备开/关实验。在数小时未佩戴人工耳蜗言语处理器后，他们将14个单音节词每个重复说三遍。然后他们打开人工耳蜗再次说出相同的言语样本。言语语言病理学家对这些话语进行了语音转录。平均而言，在元音高度、元音位置、首辅音位置、首辅音浊音或尾辅音浊音指标上，两种说话条件之间未发现差异。基于言语样本的精细转录进行的比较显示，两种说话条件之间没有差异。与清晰度较低的儿童相比，清晰度较高的儿童在设备关闭状态下言语产生能力下降的可能性并不更大。在设备开启状态下，儿童有时会使元音鼻音化，辅音送气不当。他们使元音鼻音化和首辅音送气的倾向可能反映了一种增加本体感觉反馈的尝试，这会让他们对自己的说话行为有更强的意识。
