KINEMATIC, ACOUSTIC, AND PERCEPTUAL ANALYSES OF CONNECTED SPEECH PRODUCED BY PARKINSONIAN AND NORMAL GERIATRIC ADULTS
KINEMATIC, ACOUSTIC, AND PERCEPTUAL ANALYSES OF CONNECTED SPEECH PRODUCED BY PARKINSONIAN AND NORMAL GERIATRIC ADULTS
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DOI：
10.1121/1.397755
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发表时间：
1989-06-01
影响因子：
2.4
通讯作者：
TURNER, GS
中科院分区：
文献类型：
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作者：
FORREST, K;WEISMER, G;TURNER, GS
声学和运动学分析，以及知觉评价，wre进行了帕金森氏症和正常老年人的讲话。作为一个群体，与正常的老年人相比，帕金森氏症患者的下颌运动非常有限。对于张开的姿势，帕金森病患者的下颌位移和速度大约是正常老年人的一半。与正常老年人相比，帕金森病患者的下唇运动幅度和速度也有所降低，但降低的幅度没有下颌大。下唇关闭速度表示为运动幅度的函数更大的帕金森氏症的扬声器比正常的老年人。这种下唇运动速度的增加可能反映了帕金森氏症患者在控制嘴唇抬高方面的差异，这种影响随着构音障碍的严重程度而增加。从声学上看，帕金森病患者与正常老年人相比，发声段的持续时间缩短，共振峰转换减少，声音起始时间增加。与较轻的构音障碍者相比，这些影响在较严重的构音障碍者中更大，并且在更复杂的发声手势中最明显。
Acoustic and kinematic analyses, as well as perceptual evaluation, wre conducted on the speech of Parkinsonian and normal geriatric adults. As a group, the Parkinsonian speakers had very limited jaw movement compared to the normal geriatrics. For opening gestures, jaw displacements and velocities produced by the Parkinsonian subjects were about half those produced by the normal geriatrics. Lower lip movement amplitude and velocity also were reduced for the Parkinsonian speakers relative to the normal geriatrics, but the magnitude of the reduction was not as great as that seen in the jaw. Lower lip closing velocities expressed as a function of movement amplitude were greater for the Parkinsonian speakers than for the normal geriatrics. This increased velocity of lower lip movement may reflect a difference in the control of lip elevation for the Parkinsonian speakers, an effect that increased with the severity of dysarthria. Acoustically, the Parkinsonian subjects had reduced durations of vocalic segments, reduced formant transitions, and increased voice onset time compared to the normal geriatrics. These effects were greater for the more severe, compared to the milder, dysarthrics and were most apparent in the more complex, vocalic gestures.