Ferrand C, Blood G W, Gilbert H R
Hofstra University, Department of Speech Arts and Sciences, Hempstead, NY 11550.
J Speech Hear Res. 1991 Jun;34(3):517-25. doi: 10.1044/jshr.3403.517.
The purpose of this study was to validate a proposed continuous-flow model of phonatory reaction time by investigating the temporal order of selected laryngeal and neurophysiological events involved in a phonatory reaction time task. Ten normal speakers participated in a phonatory reaction time task. Laryngeal positioning movements prior to vocal fold closure (laryngeal shift) and onset of vocal fold vibration (acoustic onset) were recorded with an electroglottograph. P300 brain potentials were collected simultaneously, and they served as an index of a central process underlying reaction time. The obtained temporal ordering of laryngeal shift, P300, and acoustic onset supported a continuous-flow model of phonatory reaction time. Use of this model might yield information that is more accurate in explaining physiological function and more precise in describing temporal patterning than the serial model.
本研究的目的是通过调查发声反应时间任务中选定的喉部和神经生理事件的时间顺序，来验证所提出的发声反应时间连续流模型。十名正常受试者参与了发声反应时间任务。使用电声门图记录声带闭合前的喉部定位运动（喉部移位）和声带振动开始（声学起始）。同时收集P300脑电，它们作为反应时间潜在中枢过程的指标。所获得的喉部移位、P300和声学起始的时间顺序支持了发声反应时间的连续流模型。与串行模型相比，使用该模型可能会产生在解释生理功能方面更准确、在描述时间模式方面更精确的信息。
