Folkins J W
J Speech Hear Res. 1981 Dec;24(4):601-15. doi: 10.1044/jshr.2404.601.
The incidence and timing of activity in the jaw-closing muscles was investigated during speech. Electromyographic activity was analyzed from the masseter, anterior temporalis, medial pterygoid, and lateral pterygoid muscles in four normal adults. Jaw movement was transduced with a strain-gauge system as the subjects read the Rainbow Passage, 11 different syllables, and trains of the same syllables at four rates. Medial pterygoid was active for all jaw-closing movements. Masseter and temporalis were often active. The incidence of lateral peak electromyographic activity were noted between muscles; however, the duration of activity in medial pterygoid was longer than in masseter and temporalis. A large amount of variability in the relative degree of activity between muscles was observed for repetitions of the same syllable with similar parameters of jaw movements. These data are discussed in relation to series of muscle coordination.
在言语过程中，对闭口肌的活动发生率和时间进行了研究。分析了四名正常成年人的咬肌、颞肌前束、翼内肌和翼外肌的肌电图活动。当受试者朗读《彩虹 passage》、11 个不同音节以及以四种速率重复相同音节序列时，用应变片系统记录下颌运动。翼内肌在所有闭口运动中均有活动。咬肌和颞肌也经常活动。记录了各肌肉之间外侧肌电图峰值活动的发生率；然而，翼内肌的活动持续时间比咬肌和颞肌更长。对于具有相似下颌运动参数的相同音节重复，观察到各肌肉之间相对活动程度存在大量变异性。结合肌肉协调系列对这些数据进行了讨论。
