Diadochokinetic syllable rate and regularity in normal and in spastic and ataxic dysarthric subjects.
Diadochokinetic syllable rate and regularity in normal and in spastic and ataxic dysarthric subjects.
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正常以及痉挛和共济失调构音障碍受试者的双动动力学音节率和规律性。
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发表时间：
1982
期刊：
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通讯作者：
A. Aronson
中科院分区：
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作者：
R. A. Portnoy;A. Aronson
通过计算机测量了30名正常受试者、30名痉挛性构音障碍受试者和30名共济失调性构音障碍受试者中/p/、/t/和/k/的双动运动音节重复率和规律性。正常受试者的速率（每秒音节）为 6.4、6.1 和 5.7；痉挛性构音障碍受试者，4.6、4.2 和 3.5；和共济失调构音障碍受试者，/p/、/t/ 和 /k/ 分别为 3.8、3.9 和 3.4。痉挛和共济失调受试者比正常受试者明显更慢且变化更大，而共济失调受试者比痉挛受试者明显更变化。共济失调受试者的重复速率明显慢于正常，而痉挛受试者的重复节奏明显比正常重复节奏变化更大，这是意想不到的发现，并且与基于知觉的构音障碍研究的结果形成对比。该研究表明，音节重复的缓慢并不限于痉挛性构音障碍，音节重复的节律障碍也不限于共济失调性构音障碍，因此表明需要对目前关于构音障碍的某些概念所基于的声学特征进行额外的定量测量。
Rate and regularity of diadochokinetic syllable repetitions of /p/, /t/, and /k/ in 30 normal subjects, 30 subjects with spastic dysarthria, and 30 subjects with ataxic dysarthria were measured by computer. Normal subjects had rates (syllables per second) of 6.4, 6.1, and 5.7; spastic dysarthric subjects, 4.6, 4.2, and 3.5; and ataxic dysarthric subjects, 3.8, 3.9, and 3.4 for /p/, /t/, and /k/, respectively. Spastic and ataxic subjects were significantly slower and more variable than normal subjects and ataxic subjects were significantly more variable than spastic subjects. The significantly slower than normal rate of repetition in the ataxic subjects and the significantly more variable than normal rhythm of repetition in the spastic subjects were unexpected findings and are in contrast with results from perceptually based investigations of dysarthria. The study demonstrates that slowness of syllable repetition is not restricted to spastic dysarthria and that dysrhythmia of syllable repetition is not restricted to ataxic dysarthria, thus suggesting the need for additional quantitative measurements of acoustic features on which certain notions about the dysarthrias are currently based.