Munhall K G, Löfqvist A, Kelso J A
Department of Psychology, Queen's University, Kingston, Ontario, Canada.
J Acoust Soc Am. 1994 Jun;95(6):3605-16. doi: 10.1121/1.409929.
This experiment investigates the coordination between the larynx and the lips and jaw in voiceless consonant production using an experimental paradigm where a mechanical perturbation is applied to an articulator. Three subjects received unexpected perturbations to the lower lip during the transition between the first vowel and the first stop in /i'pip/. Movements of the upper articulators (lips and jaw) were recorded using an optoelectronic technique. Laryngeal responses were monitored using transillumination; intraoral pressure and the acoustic signal were also recorded. Results showed that laryngeal abduction was delayed following lip perturbation and that the duration of the laryngeal adduction gesture was lengthened. The oral movements toward closure of two of the subjects were modified and all subjects showed modification of the oral release movements in the perturbed conditions. All subjects showed an increased movement velocity and displacement of the upper lip, lower lip, and jaw in the oral opening phase. First trial compensation, however, was not observed in two of the three subjects. The results are discussed with respect to the speech perturbation literature and the notion of coordinative structures.
本实验采用一种实验范式，即对发音器官施加机械扰动，来研究在清辅音发音过程中喉部与嘴唇及下颌之间的协调。三名受试者在发/i'pip/中第一个元音与第一个塞音的过渡期间，下唇受到意外扰动。使用光电技术记录上发音器官（嘴唇和下颌）的运动。通过透照法监测喉部反应；同时还记录口腔内压力和声信号。结果显示，嘴唇受到扰动后喉部外展延迟，喉部内收动作的持续时间延长。两名受试者朝向闭合的口腔动作发生改变，并且所有受试者在受扰动情况下口腔释放动作均有改变。所有受试者在口腔张开阶段上唇、下唇和下颌的运动速度和位移均增加。然而，三名受试者中有两名未观察到首次尝试补偿。结合言语扰动文献和协调结构的概念对结果进行了讨论。
