Department of Speech-Language-Hearing Sciences, Hofstra University, Hempstead, NY 11549, USA.
J Speech Lang Hear Res. 2010 Dec;53(6):1579-94. doi: 10.1044/1092-4388(2010/09-0173). Epub 2010 Aug 10.
This study introduces a series of systematic investigations intended to clarify the parameters of the fluency-inducing conditions (FICs) in stuttering.
Participants included 11 adults, aged 20-63 years, with typical speech-production skills. A repeated measures design was used to examine the relationships between several speech production variables (vowel duration, voice onset time, fundamental frequency, intraoral pressure, pressure rise time, transglottal airflow, and phonated intervals) and speech rate and instatement style during metronome-entrained rhythmic speech.
Measures of duration (vowel duration, voice onset time, and pressure rise time) differed across different metronome conditions. When speech rates were matched between the control condition and metronome condition, voice onset time was the only variable that changed.
Results confirm that speech rate and instatement style can influence speech production variables during the production of fluency-inducing conditions. Future studies of normally fluent speech and of stuttered speech must control both features and should further explore the importance of voice onset time, which may be influenced by rate during metronome stimulation in a way that the other variables are not.
本研究介绍了一系列旨在阐明口吃流畅诱导条件（FIC）参数的系统研究。
参与者包括 11 名年龄在 20-63 岁之间、具有典型言语产生技能的成年人。采用重复测量设计来检验在节拍器驱动的节奏性言语过程中，几个言语产生变量（元音时长、声门起始时间、基频、口腔内压、压升时间、跨声门气流和发声间隔）与言语率和陈述方式之间的关系。
不同节拍器条件下的时长测量值（元音时长、声门起始时间和压升时间）不同。当控制条件和节拍器条件下的语速匹配时，只有声门起始时间发生变化。
结果证实，语速和陈述方式会影响流畅诱导条件下的言语产生变量。正常流畅言语和口吃言语的未来研究必须同时控制这两个特征，并进一步探索声门起始时间的重要性，因为在节拍器刺激期间，该变量可能会受到语速的影响，而其他变量则不会。
