Guitar B, Guitar C, Neilson P, O'Dwyer N, Andrews G
University of Vermont, Communication Science & Disorders, Burlington 05405.
J Speech Hear Res. 1988 Mar;31(1):28-35. doi: 10.1044/jshr.3101.28.
The present study examined lip muscle activity during the speech production of stutterers and fluent speakers to provide information about the nature of stuttering blocks. Depressor Anguli Oris (DAO) and Depressor Labii Inferioris (DLI) were recorded, using hooked-wire electromyography (EMG), in 3 stutterers and 3 nonstutterers during productions of the words "peek", "puck", and "pack." EMG records indicated that nonstutterers activated DAO prior to DLI for production of the initial/p/. Stutterers frequently reversed this sequence of onset, particularly when they stuttered. Results are discussed in terms of mistiming versus anticipatory hypertension hypotheses about stuttering.
本研究检测了口吃者和流利说话者在言语产生过程中的唇部肌肉活动，以提供有关口吃阻塞本质的信息。使用钩线肌电图（EMG）记录了3名口吃者和3名非口吃者在说出“peek”“puck”和“pack”这几个单词时的降口角肌（DAO）和降下唇肌（DLI）的活动情况。肌电图记录表明，非口吃者在发出起始音/p/时，DAO比DLI先激活。口吃者经常颠倒这种起始顺序，尤其是在口吃时。研究结果根据关于口吃的时机错误与预期性高血压假说进行了讨论。
