Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Clin Exp Otorhinolaryngol. 2012 Apr;5 Suppl 1(Suppl 1):S69-72. doi: 10.3342/ceo.2012.5.S1.S69. Epub 2012 Apr 30.
Verbal communication depends on a good function of voice and speech organs. Some of the voice characteristics of deaf people differ considerably from those of speakers with normal hearing. After cochlear implantation (CI), auditory control of voice production is possible and the quality of the voice is improved. CI improves quality of voice, speech and hearing with deafness. The aim of our study was to investigate the relationship between acoustic analysis before CI and the speech intelligibility before and after CI.
Twelve prelingually deafened children implanted unilaterally at the age of 3.4-9 years were included in the study. For all of the children an acoustic analysis of the Slovene vowel 'a' was performed before CI. The fundamental frequency (F0), jitter, shimmer and noise-to-harmonic ratio (NHR) were studied before the implantation. For all of the children the speech intelligibility was performed before and 12 months after CI. Preoperative hearing was divided on existing residual hearing. The results of the acoustic analyses and speech intelligibility before and after CI were compared for preoperative hearing. The results of the speech intelligibility were compared for the age of operation and preoperative acoustic analysis (F0, jitter, shimmer, NHR).
Preoperative hearing had no influence on preoperative voice analysis. The children with residual hearing had a high grade of speech intelligibility before and after CI. The preoperative shimmer had positive correlation with postoperative 12 month speech intelligibility (r=0.618, P=0.032). The preoperative jitter had positive correlation with postoperative 12 month speech intelligibility, but was not statistically significant (r=0.479, P=0.116).
Shimmer on preoperative voice analyses had influence on speech intelligibility after CI.
言语交流依赖于良好的嗓音和言语器官功能。一些聋人的嗓音特征与听力正常的人有很大的不同。人工耳蜗植入（CI）后，可以对声音产生进行听觉控制，从而改善嗓音质量。CI 可以改善耳聋患者的语音、言语和听力质量。我们的研究旨在探讨 CI 前的声学分析与 CI 前后的言语可懂度之间的关系。
本研究纳入了 12 名 3.4-9 岁单侧人工耳蜗植入的语前聋儿童。对所有儿童均进行斯洛文尼亚元音“a”的声学分析。研究前，对基频（F0）、抖动、颤抖和噪声与谐波比（NHR）进行了研究。对所有儿童均在 CI 前和 CI 后 12 个月进行言语可懂度测试。根据现有的残余听力，将术前听力进行分组。比较了 CI 前后的声学分析和言语可懂度的结果。比较了手术年龄和术前声学分析（F0、抖动、颤抖、NHR）与 CI 后言语可懂度的结果。
术前听力对术前嗓音分析没有影响。有残余听力的儿童在 CI 前后的言语可懂度都较高。术前颤抖与术后 12 个月言语可懂度呈正相关（r=0.618，P=0.032）。术前抖动与术后 12 个月言语可懂度呈正相关，但无统计学意义（r=0.479，P=0.116）。
术前嗓音分析中的颤抖对 CI 后的言语可懂度有影响。
