Hocevar-Boltezar Irena, Radsel Zora, Vatovec Jagoda, Geczy Branka, Cernelc Smilja, Gros Anton, Zupancic Janez, Battelino Saba, Lavrencak Bostjan, Zargi Miha
Department of Otorhinolaryngology and Head and Neck Surgery, University Medical Center, Ljubljana, Slovenia.
Otol Neurotol. 2006 Jun;27(4):499-503. doi: 10.1097/01.mao.0000224083.70225.b7.
To assess the influence of acquired auditory control on some voice parameters in deaf children and adults after cochlear implantation.
Prospective clinical study.
Tertiary referral center.
Twenty-nine prelingually deafened children and 11 postlingually deafened adults.
The samples of a vowel /a/ were analyzed with an Multi-Dimensional Voice Program (Kay Elemetrics Corporation, Lincoln Park, NJ) before and 6 to 12 months after the cochlear implantation.
The average fundamental frequency (F0), the short-term variation of F0 (JIT) and the amplitude (SH), the very long-term variation of F0 (vF0) and the amplitude (vAm), and the noise-to-harmonic ratio (NHR) were determined and compared for both age groups. The results of the acoustic analysis performed before the implantation were compared with the results after the implantation for children and adults.
Significantly greater JIT, SH, vF0, and vAm were detected in the children than in the adults before and after the implantation. The prelingually deafened children significantly improved the control of their phonation after 6 to 12 months' use of the cochlear implant (JIT: p=0.014, SH: p=0.011, vF0: p=0.014, vAm: p=0.031). In the postlingually deafened adults, no significant improvement was found in any of the studied voice parameters after the implantation. F0 showed little or no change after the implantation in children and adults.
As expected, the voice quality of the prelingually deafened children was significantly worse than that of the postlingually deafened adults. After cochlear implantation, the children significantly improved their short-term and long-term F0 and amplitude variability. In adults, no significant improvement was detected. We suppose that the improvement is a consequence not only of the acquired hearing control but also of the adaptation ability of neuromuscular phonation control and the maturing of these control mechanisms in children. In adults, better phonation quality in general and lesser improvement after the implantation can be the results of well-developed and stable phonation patterns.
评估人工耳蜗植入后获得性听觉控制对聋儿和成人某些嗓音参数的影响。
前瞻性临床研究。
三级转诊中心。
29名语前聋儿童和11名语后聋成人。
在人工耳蜗植入前以及植入后6至12个月，使用多维嗓音程序（Kay Elemetrics公司，新泽西州林肯公园）对元音/a/的样本进行分析。
测定并比较两个年龄组的平均基频（F0）、F0的短期变化（JIT）和幅度（SH）、F0的极长期变化（vF0）和幅度（vAm）以及噪声谐波比（NHR）。将儿童和成人植入前进行的声学分析结果与植入后进行比较。
在植入前后，儿童的JIT、SH、vF0和vAm均显著高于成人。语前聋儿童在使用人工耳蜗6至12个月后，其发声控制能力有显著改善（JIT：p = 0.014，SH：p = 0.011，vF0：p = 0.014，vAm：p = 0.031）。在语后聋成人中，植入后所研究的任何嗓音参数均未发现显著改善。儿童和成人植入后F0变化很小或无变化。
正如预期的那样，语前聋儿童的嗓音质量明显差于语后聋成人。人工耳蜗植入后，儿童的短期和长期F0及幅度变异性有显著改善。在成人中，未检测到显著改善。我们推测，这种改善不仅是获得性听觉控制的结果，也是儿童神经肌肉发声控制的适应能力以及这些控制机制成熟的结果。在成人中，总体上较好的发声质量以及植入后较小的改善可能是发达且稳定的发声模式的结果。
