Patel Rita R, Dubrovskiy Denis, Döllinger Michael
Department Speech and Hearing Sciences, College of Arts and Sciences, Indiana University, Bloomington, Indiana.
Department of Phoniatrics and Pediatric Audiology, University Hospital Erlangen, Medical School, Erlangen, Germany.
J Voice. 2014 Jul;28(4):476-86. doi: 10.1016/j.jvoice.2013.12.010. Epub 2014 Mar 12.
The aim of this study was to quantify phases of the vibratory cycle using measurements of glottal cycle quotients and glottal cycle derivatives, in typically developing prepubertal children and young adults with the use of high-speed digital imaging (HSDI).
Vocal fold vibrations were recorded from 27 children (age range 5-9 years) and 35 adults (age range 21-45 years), with HSDI at 4000 frames per second for sustained phonation. Glottal area waveform measures of Open Quotient, Closing Quotient, Speed Index (SI), Rate Quotient, and Asymmetry Quotient (AsyQ) were computed. Glottal cycle derivatives of Amplitude Quotient (AQ) and Maximum Area Declination Rate (MADR) were also computed. Group differences (adult females, adult males, and children) were statistically investigated for mean and standard deviation values of the glottal cycle quotients and glottal cycle derivatives.
Children exhibited higher values of SI and AsyQ and lower values of MADR compared with adult males. Children exhibited the highest mean value and lowest variability in AQ compared with adult males and females. Adult males showed lower values of SI, AsyQ, AQ, and higher values of MADR compared with adult females.
Glottal cycle vibratory motion in children is functionally different compared with adult males and females, suggesting the need for development of children specific norms for both normal and disordered voice qualities.
本研究旨在通过使用高速数字成像（HSDI）测量声门周期商和声门周期导数，对青春期前发育正常的儿童和年轻成年人的振动周期各阶段进行量化。
对27名儿童（年龄范围5 - 9岁）和35名成年人（年龄范围21 - 45岁）进行声带振动记录，使用HSDI以每秒4000帧的速度进行持续发声。计算声门面积波形的开放商、闭合商、速度指数（SI）、速率商和不对称商（AsyQ）。还计算了振幅商（AQ）和最大面积下降率（MADR）的声门周期导数。对声门周期商和声门周期导数的均值和标准差进行统计学研究，以探讨组间差异（成年女性、成年男性和儿童）。
与成年男性相比，儿童的SI和AsyQ值更高，MADR值更低。与成年男性和女性相比，儿童的AQ均值最高且变异性最低。与成年女性相比，成年男性的SI、AsyQ、AQ值更低，MADR值更高。
儿童的声门周期振动运动在功能上与成年男性和女性不同，这表明需要为正常和异常嗓音质量制定儿童特定的标准。
