维吾尔语脑卒中构音障碍患者元音声学特征分析

Acoustic analysis of vowel production in XinJiang Uyghur patients with post-stroke dysarthria

目的:探讨维吾尔语脑卒中构音障碍患者元音声学特征,分析维吾尔语构音异常运动的特点。方法:纳入2020年1月~2021年12月我科住院康复的维吾尔语脑卒中后存在构音障碍的患者26例和正常人30例,朗读维吾尔语8个元音,分析比较元音共振峰F1、F2的频率、元音空间面积(VSA)和元音清晰度指数(VAI)的差异。结果:病例组元音/i、u/的F1高于对照组(P<0.05)。病例组元音/a、u/的F2高于对照组(P<0.05),元音/ε、e、?、i、y/的F2低于对照组(P<0.05)。维吾尔语脑卒中构音障碍患者的VSA、VAI小于对照组(P<0.05)。结论:维吾尔语脑卒中后构音障碍患者VSA减小、VAI降低,元音发音呈集中趋势,舌运动范围减少,位置不正确,主要在舌前后运动范围缩小,导致发音不清晰。

Objective:To explore the vowel acoustic characteristics in XinJiang Uyghur patients with post-stroke dysarthria and analyze the characteristics of abnormal articulation.Methods:From January,2020 to December,2020,20 patients with post-stroke dysarthria and 20 healthy controls were asked to read Uygur vowels/ɑ,ε,e,?,o,I,u,y/,and the F1,F2,the vowel space area(VSA),vowel articulation index(VAI)were measured.Results:The F2 of vowelsɑand u in the case group was higher than that in the control group(P<0.05).The F2 of vowels/ε,e,?,i,y/in the case group was lower than that in the control group(P<0.05).For the vowel pronunciation/i,u/,the F1 in the case group was significantly higher than that in the control group(P<0.05).The VSA and VAI were significant less in the Uyghur patients with post-stroke dysarthria than in the controls(P<0.05).Conclusion:The vowel production is impaired in the Uyghur patients with post-stroke dysarthria,the VSA and VAI decrease,the pronunciation of vowels tends to be concentrated,the range of tongue motion is reduced,and the position is incorrect,which impacts the speech clarity.