Cheng Hei Yan, Murdoch Bruce E, Goozée Justine V
Motor Speech Research Unit, Division of Speech Pathology, The University of Queensland, Brisbane, Queensland, Australia.
Clin Linguist Phon. 2007 Jun;21(6):481-99. doi: 10.1080/02699200701325043.
This study was designed to investigate the development of articulatory timing from mid-childhood to late adolescence. Productions of sentences containing /t/, /l/, /s/, and /k/ were produced by 48 children and adults (aged 6-38 years) and captured using the Reading Electropalatography3 (EPG3) system. Mean duration of the sentences and the approach, closure/stable constriction, and release phases of consonant articulation were calculated. In addition, temporal coordination of lingual gestures and the intra-subject articulatory timing variation were investigated across the ages. Results reveal some distinct differences in duration and temporal coordination of lingual gestures between 6- to 7-year-olds and mature speakers, with continual refinement of articulatory control indicated into late adolescence. Differences in articulatory stability, in contrast, were not significant. The present findings may form a platform for development of a more descriptive model of motor speech development.
本研究旨在调查从童年中期到青春期后期发音时间的发展情况。48名儿童和成人（年龄在6至38岁之间）说出包含/t/、/l/、/s/和/k/的句子，并使用阅读电子腭图3（EPG3）系统进行记录。计算句子的平均时长以及辅音发音的起音、闭塞/稳定收缩和除阻阶段。此外，还研究了不同年龄段舌部动作的时间协调性以及个体内部发音时间的变化。结果显示，6至7岁儿童与成熟发音者在舌部动作的时长和时间协调性上存在一些明显差异，表明发音控制在青春期后期仍在持续完善。相比之下，发音稳定性的差异并不显著。本研究结果可能为构建一个更具描述性的运动性言语发展模型奠定基础。
