Hospital das Clínicas-University of São Paulo Medical School, Sao Paulo, Brazil.
J Voice. 2011 Nov;25(6):692-9. doi: 10.1016/j.jvoice.2010.07.001. Epub 2011 Mar 1.
To ascertain whether cochlear implantation (CI), without specific vocal rehabilitation, is associated with changes in perceptual and acoustic vocal parameters in adults with severe to profound postlingual deafness.
Merely restoring auditory feedback could allow the individual to make necessary adjustments in vocal pattern.
Prospective and longitudinal.
The experimental group composed of 40 postlingually deaf adults (20 males and 20 females) with no previous laryngeal or voice disorders. Participants' voices were recorded before CI and 6-9 months after CI. To check for chance modifications between two evaluations, a control group of 12 postlingually deaf adults, six male and six female, without CI was also evaluated. All sessions composed of the recording of read sentences from Consensus Auditory-Perceptual Evaluation of Voice and sustained vowel /a/. Auditory and acoustic analyses were then conducted.
We found a statistically significant reduction in overall severity, strain, loudness, and instability in auditory analysis. In vocal acoustic analysis, we found statistically significant reduction fundamental frequency (F0) values (in male participants) and F0 variability (in both genders). The control group showed no statistically significant changes in most vocal parameters assessed, apart from pitch and F0 (in female participants only). On comparing the interval of variation of results between the experimental and control groups, we found no statistically significant difference in vocal parameters between CI recipients and nonrecipients, with the exception of F0 variability in male participants.
The patients in our sample showed changes in overall severity, strain, loudness, and instability values, and reductions in F0 and its variability. On comparing the variation of results between the groups, we were able to prove in our study that implant recipients postlingually deaf adults (experimental group), without specific vocal rehabilitation, differed from nonrecipients (control group) in loudness and F0 variability sustained vowel /a/ in male participants.
确定人工耳蜗植入（CI）是否与重度至极重度后天聋成年人的感知和声学嗓音参数变化相关，而无需特定的嗓音康复。
仅恢复听觉反馈就能使个体在嗓音模式上做出必要的调整。
前瞻性和纵向研究。
实验组由 40 名后天聋成年人（20 名男性和 20 名女性）组成，他们没有以前的声带或嗓音障碍。在 CI 之前和之后的 6-9 个月记录参与者的声音。为了检查两次评估之间的偶然变化，还评估了一个没有 CI 的 12 名后天聋成年人（6 名男性和 6 名女性）的对照组。所有测试均包括从共识听觉感知嗓音评估中读取句子和持续元音/a/。然后进行听觉和声学分析。
我们发现听觉分析中整体严重度、紧张度、响度和不稳定性有统计学意义的降低。在嗓音声学分析中，我们发现男性参与者的基频（F0）值和两性参与者的 F0 可变性有统计学意义的降低。对照组在评估的大多数嗓音参数中没有显示出统计学意义的变化，除了女性参与者的音高和 F0。比较实验组和对照组结果变化的间隔，我们发现 CI 接受者和非接受者之间的嗓音参数没有统计学意义的差异，除了男性参与者的 F0 可变性。
我们的样本中的患者在整体严重度、紧张度、响度和不稳定性值以及 F0 和其可变性方面显示出变化。通过比较两组结果的变化，我们在研究中证明了后天聋成年患者（实验组），在没有特定嗓音康复的情况下，与非接受者（对照组）在男性参与者的/a/持续元音的响度和 F0 可变性方面存在差异。
