Ackermann H, Ziegler W
Department of Neurology, University of Tübingen, FRG.
J Neurol Neurosurg Psychiatry. 1991 Jan;54(1):74-6. doi: 10.1136/jnnp.54.1.74.
Patients with cerebellar disease may exhibit tremulous phonation as part of their dysarthria. The results of an acoustic analysis of cerebellar voice tremor in a patient with hereditary ataxia and presenting with a purely cerebellar syndrome are reported. Analysis included computation of speech intensity contours, fundamental frequency contours, and spectral parameters from sustained productions of vowels and voiceless fricatives. Fundamental frequency contours during sustained phonation of vowels showed rhythmic oscillations at a rate of about 3 Hz. No concomitant periodicity could be detected for the parameters characterising voiceless fricative production. The results indicate an impairment of phonatory control in relation to the maintenance of a constant isometric activity of the internal laryngeal muscles. Cerebellar voice tremor may therefore be classified as a form of postural tremor.
患有小脑疾病的患者可能会出现震颤性发声，这是其构音障碍的一部分。本文报告了一名患有遗传性共济失调且表现为单纯小脑综合征的患者小脑性语音震颤的声学分析结果。分析包括计算元音和清擦音持续发声时的语音强度轮廓、基频轮廓和频谱参数。元音持续发声时的基频轮廓显示出约3Hz频率的节律性振荡。对于表征清擦音发声的参数，未检测到伴随的周期性。结果表明，与喉内肌维持恒定等长活动相关的发声控制存在损害。因此，小脑性语音震颤可归类为姿势性震颤的一种形式。
