GRADATIONS IN A PATTERN OF NEUROMUSCULAR ACTIVITY ASSOCIATED WITH STUTTERING
GRADATIONS IN A PATTERN OF NEUROMUSCULAR ACTIVITY ASSOCIATED WITH STUTTERING
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DOI：
10.1044/jshr.3506.1216
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发表时间：
1992-12-01
期刊：
影响因子：
--
通讯作者：
SMITH, A
中科院分区：
文献类型：
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作者：
DENNY, M;SMITH, A
在17名口吃受试者的会话过程中记录了唇、颌和颈部肌肉的肌电图。平均功率谱和对肌电图之间的相干性进行了计算。结果表明，震颤样振荡在5-15赫兹的范围内，高振幅的肌电图占据了一个共同的连续的运动模式，可能会发生在口吃。在结果落在这一连续体的强端的受试者中，口吃的言语被区分为广泛分布的高振幅振荡和振荡频率下相对较高的连贯性。在另一个极端，无论是振荡活动，也不是幅度更大的口吃的讲话，事实上口吃和流利的讲话往往与近似相等的EMG幅度。这些结果表明，没有一个单一的一组生理事件，统一的特征口吃在所有的个人;相反，事件，如发生高振幅振荡发生在不同的强度在不同的个人。
EMGs were recorded from muscles of the lip, jaw, and neck during conversational speech of 17 stuttering subjects. Averaged power spectra and coherence between pairs of EMGs were computed. Results indicate that tremorlike oscillations in the range of 5-15 Hz and high amplitudes of EMGs occupy a common continuum of motor patterns that may occur in stuttering. In subjects whose results fell at the strong end of this continuum, stuttered speech was distinguished by widely distributed, high-amplitude oscillations and relatively high coherence at the frequency of oscillation. At the other extreme, neither oscillatory activity nor amplitude was greater for stuttered speech; in fact stuttered and fluent speech were often associated with approximately equal EMG amplitude. These results suggest that there is not a single set of physiological events that uniformly characterize stuttering in all individuals; rather, events such as the occurrence of high-amplitude oscillations occur at different strengths in different individuals.