University of Toronto, Ontario, Canada.
J Speech Lang Hear Res. 2013 Feb;56(1):137-49. doi: 10.1044/1092-4388(2012/11-0218). Epub 2012 Aug 15.
This study sought to investigate the effect of palate morphology and anthropometric measures of the head on positional variability of the tongue during consonants.
An electromagnetic tracking system was used to record tongue movements of 21 adults. Each talker produced a series of symmetrical VCV syllables containing one of the consonants /t, d, s, z, , t, k, g, j/ and corner vowels /i, a, u/. Distributions of x, y, and z coordinates at maximum tongue elevation were used to represent tongue position variability across contexts. Anthropometric palate and head measures were also obtained.
Positional variability of the tongue differed between the front (e.g., alveolar and post-alveolar) and back (velar) consonant groups. A correlational analysis showed that tongue position variability of the front consonants was explained, to a degree, by palate curvature and palate length. The variability of the back consonants was not explained by any structural measures.
Palate morphology needs to be taken into account when making observations regarding the extent of tongue position variability during consonants in research and in achieving clinical goals.
本研究旨在探讨腭形态和头部人体测量学指标对头在辅音中对舌位置变异性的影响。
使用电磁跟踪系统记录 21 名成年人的舌运动。每位说话者发出一系列包含辅音 /t、d、s、z、 、t、k、g、j/ 和角元音 /i、a、u/ 的对称 VCV 音节。在最大舌位时的 x、y 和 z 坐标分布用于表示跨语境的舌位置变异性。还获得了人体测量学的腭和头部测量值。
舌在前面（例如，齿龈和后齿龈）和后面（软腭）辅音组之间的位置变异性不同。相关分析表明，前辅音的舌位置变异性在一定程度上可以用腭曲率和腭长度来解释。后辅音的变异性不能用任何结构措施来解释。
在研究和实现临床目标中观察辅音期间舌位置变异性的程度时，需要考虑腭形态。
