Characterizing vibratory kinematics in children and adults with high-speed digital imaging.
Characterizing vibratory kinematics in children and adults with high-speed digital imaging.
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DOI：
10.1044/2014_jslhr-s-12-0278
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发表时间：
2014-04-01
期刊：
影响因子：
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通讯作者：
Döllinger M
中科院分区：
文献类型：
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作者：
Patel R;Dubrovskiy D;Döllinger M
本研究的目的是利用高速数字成像技术量化和识别典型发育中的青春期前儿童和年轻人的特征振动运动。声带的振动记录来自27名儿童（5-9岁）和35名成人（21-45岁），以每秒4,000帧的高速持续发声。振幅周期性、时间周期性、相位不对称性、空间对称性和声门间隙指数的运动学特征从声门面积波形的平均值和标准差（即，周期间变异性）。儿童表现出较低的平均振幅周期性相比，男性和女性和较低的时间周期性相比，男性。与男性相比，儿童和女性在振幅周期性、时间周期性、相位不对称性和声门间隙指数方面表现出更大的变异性。妇女有较低的幅度周期性和时间周期性的平均值相比，男性。儿童不同的空间，但更多的时间在声带运动，这表明需要发展的儿童特定的运动规范。结果表明，儿童更不受控制的振动运动，反映了声带分层结构和航空声源机制的变化。
The aim of this study is to quantify and identify characteristic vibratory motion in typically developing prepubertal children and young adults using high-speed digital imaging. The vibrations of the vocal folds were recorded from 27 children (ages 5–9 years) and 35 adults (ages 21–45 years), with high speed at 4,000 frames per second for sustained phonation. Kinematic features of amplitude periodicity, time periodicity, phase asymmetry, spatial symmetry, and glottal gap index were analyzed from the glottal area waveform across mean and standard deviation (i.e., intercycle variability) for each measure. Children exhibited lower mean amplitude periodicity compared to men and women and lower time periodicity compared to men. Children and women exhibited greater variability in amplitude periodicity, time periodicity, phase asymmetry, and glottal gap index compared to men. Women had lower mean values of amplitude periodicity and time periodicity compared to men. Children differed both spatially but more temporally in vocal fold motion, suggesting the need for the development of children-specific kinematic norms. Results suggest more uncontrolled vibratory motion in children, reflecting changes in the vocal fold layered structure and aero-acoustic source mechanisms.