Early Cochlear Implantation Allows Deaf Children to Control Voice Pitch and Loudness independently
Early Cochlear Implantation Allows Deaf Children to Control Voice Pitch and Loudness independently
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DOI：
10.1097/mao.0000000000003388
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发表时间：
2022-01-01
影响因子：
2.1
通讯作者：
Omori, Koichi
中科院分区：
文献类型：
--
作者：
Yamazaki, Hiroshi;Suehiro, Atsushi;Omori, Koichi
目的：具有人工耳蜗植入物（CI）的先天聋哑儿童提高了他们的言语产生的清晰度，但是他们的韵律，包括语音音高和响度变化所产生的压力和语调，通常与正常的听力人不同，这会影响他们流利的口头交流。这项研究旨在使用新开发的视觉引导的音高更改任务来阐明CI受体中语音音高和响度控制的异常特征。方法：我们包括13名正常听力志愿者（NH组）和17名先天性聋哑CI使用者，他们表现出良好的语音清晰度。根据植入年龄为2。5年，将17个CI使用者分为早期CI和晚期CI组。使用视觉引导的音高更改任务和持续元音的声音分析，我们评估了他们的声音技能，以保持恒定的音高和响度，并故意改变语音音高独立于响度。在检查时，NH，早期CI和晚期CI组的平均年龄为24.1、12.7和18.9岁。结果：在恒定元音产生期间，早期CI和晚期CI组在音高和响度上比NH组显示出更大的波动。但是，当专注于有意改变声音的音调时，早期CI组明显优于晚期CI组，并且就其独立于响度而改变声音音调的能力与NH组相当。结论：在先天聋哑患者中，植入年龄与语音技能的发展有关，以分别控制语音音高和响度，这可能会影响他们流利的韵律产生。
Objective: Congenitally deaf children with a cochlear implant (CI) improve their speech production intelligibility, but their prosody, including stress and intonation produced by voice pitch and loudness changes, often differs from normal hearing people, which affects their fluent oral communication. This study is aimed to clarify abnormal characteristics of voice pitch and loudness control in CI recipients using a newly developed visually guided pitch change task. Methods: We included 13 normal hearing volunteers (NH group) and 17 congenitally deaf CI users who showed good speech intelligibility. The 17 CI users were divided into Early-CI and Late-CI groups, based on their age at implantation of 2.5 years. Using the visually guided pitch change task and acoustic voice analysis of sustained vowels, we assessed their vocal skills to maintain constant pitch and loudness and intentionally change the voice pitch independent from loudness. At the time of examination, the mean age was 24.1, 12.7, and 18.9 years in the NH, Early-CI, and Late-CI groups. Results: During constant vowel production, Early-CI and Late-CI groups showed more significant fluctuations in pitch and loudness than the NH group. However, when focusing on intentionally changing only the pitch of the voice, the Early-CI group was significantly better than the Late-CI group and comparable to the NH group in terms of their ability to change vocal pitch independently from loudness. Conclusion: Among congenitally deaf patients, age at implantation was associated with the development of voice skills to control voice pitch and loudness separately, which may influence their fluent prosody production.