【摘要】 目的:探讨特发性嗓音震颤(EVT)的嗓音变化及声学特征。方法:对18例EVT的患者的临床表现及嗓音进行了观察及声学分析。结果:18例EVT的患者中,女性占72%(13/18例),平均发病年龄为57岁,89%(16/18)无神经系统异常。临床表现为嗓音颤抖、发声困难,甚至频繁出现语音中断。喉体出现不自主的规律性颤动,双声带、室带及杓状软骨呈规律性开闭样颤抖,同时均伴有构音器官(软腭、舌及咽侧壁)的颤动。嗓音震颤的频率为4~6Hz。嗓音的声学分析特征为振幅微扰明显升高,软发声指数、无声度、嗓音中断度及嗓音震颤等参数出现特异性改变。结论:EVT的嗓音变化是一种频率较低的规律性震颤,严重者表现为发声困难、频繁出现语音中断。更多还原

【Abstract】 Objective:To discuss the voice change and acoustic character of essential voice tremor.Method:Observations and acoustic studies were performed about clinical manifestations and voice of 18 patients with essential voice tremor.Result:In 18 patients with essential voice tremor, female accounts for 72% (13/18 cases). The mean age at tremor onset was 57 years old .And 89% of them had no neurologic abnormalities. The clinical manifestation includes voice tremor, dysphonia, even frequent voice interruption. The laryngeal body happens to regular tremor inautomatically. Bilateral vocal cords, ventricular cords and arytenoid cartilages also tremble regularly open and closed, together with the tremor of voice-producing organs(soft palate, tongue and lateral pharyngeal wall). The frequency of voice tremor is 4~6 Hz. The acoustic analysis characteristics of voice is the obvious increasing of Shimmer, presenting the specific change of the parameters such as soft phonation index(SPI), degree of voiceless(DUV), degree of voice breaks (DVB), F0 tremor intensity index (FTRI) and Amplitude Tremor IntensityIndex( ATRI).Conclusion:The voice change of essential voice tremor is a kind of regular tremor with low frequency. For the severe patients, it shows dysphonia and frequent voice interruption.更多还原