Interactions in the labial musculature during speech.
Interactions in the labial musculature during speech.
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言语过程中唇部肌肉组织的相互作用。
DOI：
10.1044/jshr.3102.253
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Brown,CK
中科院分区：
文献类型：
--
作者：
Folkins,JW;Linville,RN;Garrett,JD;Brown,CK
通过操纵与双唇闭合相关的活动爆发的幅度，研究了言语过程中上唇和下唇肌电活动的相互作用。四对电极被放置在四个正常说话的年轻人的嘴唇肌肉组织中。肌肉活动的操纵通常导致从其他三个电极对记录的活动的正相关变化。当操纵下唇肌肉活动和操纵上唇肌肉活动时，发现了类似的效果，这表明嘴唇之间的相互作用没有不对称性。下唇闭合运动的测量通常与调制的肌肉活动相关，这表明嘴唇开口的大小是变化的，以适应不同的闭合力。系统的灵活性，产生积极的相关性，在不同的唇区的活动进行了讨论和对比的建议，有互补的变化，产生负相关性，在不同的唇肌的活动在讲话。
Interactions in electromyographic activity of the upper and lower lips during speech were studied by manipulating the magnitude of bursts of activity related to bilabial closure. Four pairs of electrodes were placed in the labial musculature in each of four normal-speaking young adults. Manipulation of muscle activity usually resulted in positively correlated changes in activity recorded from the other three electrode pairs. Similar effects were found when lower lip muscle activity was manipulated and when upper lip muscle activity was manipulated, suggesting there is no asymmetry in the interactions between lips. Measurements of lower lip closing movement often correlated with the modulated muscle activity, suggesting that the size of lip opening was varied to accommodate different closing forces. The flexibility of a system producing positive correlations in the activity of different labial regions is discussed and contrasted with the suggestions that there are complementary variations, producing negative correlations, in the activity of different labial muscles during speech.