Orofacial muscle activity of children who stutter: a preliminary study.
Orofacial muscle activity of children who stutter: a preliminary study.
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口吃儿童的口面部肌肉活动：初步研究。
DOI：
10.1044/jshr.3805.1025
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Goffman,L
中科院分区：
文献类型：
--
作者：
Kelly,EM;Smith,A;Goffman,L
本研究是对口吃发展与言语运动过程成熟之间关系的初步调查。记录口吃儿童及其正常流利的同龄人在流利和不流利言语期间的口面部肌肉的肌电图（EMG）活动。研究对象为 9 名口吃儿童（8 名男孩和 1 名女孩），年龄范围为 2:7 至 14:0，以及 9 名年龄和性别匹配的不口吃儿童。将成对的表面肌电图电极放置在儿童的脸上，覆盖二腹肌（ABD）、上唇提肌（ULIP）和下口轮匝肌（LLIP）的前腹部。从儿童的对话语音样本中提取了二十段口吃（针对口吃的儿童）和感知流畅的语音。计算肌电图活动的振幅包络谱。 3 名最大的口吃儿童在口吃期间，ULIP、LLIP 或 ABD 肌肉中出现了 5 至 15 Hz 范围内 EMG 活动的震颤样振荡。年幼的口吃儿童和不口吃的儿童在口吃和/或感知流畅的言语过程中表现出 1 至 4 Hz 范围内的主要频谱峰值。据推测，口吃儿童言语运动过程中出现的震颤样不稳定可能与他们的一般神经成熟和口吃的发展相一致。
This study was a preliminary investigation of the relations between stuttering development and the maturation of speech motor processes. Electromyographic (EMG) activity was recorded from the orofacial muscles of children who stutter and their normally fluent peers during fluent and disfluent speech. Nine children who stutter (8 boys and 1 girl), ranging in age from 2:7 to 14:0, and 9 age- and sex-matched children who do not stutter were subjects. Pairs of surface EMG electrodes were placed on children’s faces overlying the anterior belly of the digastric (ABD), levator labii superior (ULIP), and orbicularis oris inferior (LLIP) muscles. Twenty segments of stuttered (for the children who stutter) and perceptually fluent speech were extracted from children’s conversational speech samples. Spectra of the amplitude envelopes of the EMG activity were computed. The 3 oldest children who stutter showed evidence of tremorlike oscillations of EMG activity in the 5 to 15 Hz range during stuttering in either ULIP, LLIP, or ABD muscles. The younger children who stutter and the children who do not stutter demonstrated primary spectral peaks in the 1 to 4 Hz range during stuttered and/or perceptually fluent speech. It is hypothesized that the emergence of tremorlike instabilities in the speech motor processes of children who stutter may coincide with aspects of their general neural maturation and with the development of stuttering.