Abstract: In order to study the differences between dysarthria patients and normal people, TORGO database developed by the University of Toronto is used to analyze the proportion of dysarthria patients and normal people in the range of abnormal articulation movement of tongue root, tongue middle and tongue tip. The 25 mm and 2.58 standard deviations is taken as the thresholds respectively in lognormal distribution fitting and normal distribution fitting. The results show that compared with normal people, patients with dysarthria have a wider range of articulation movement in the front and back, left and right, up and down directions of the tongue, and the proportion of abnormal articulation movement is larger than that of the normal subjects. The proportion in the range of dysarthria patients’ abnormal articulation movement in the left and right direction of tongue is about 10%, while that of normal people is about 1% when 2.58 standard deviations is taken as the threshold value. At the same time, the range of articulation movement in the left and right direction of the tongue is narrower than that in other directions.

Key words: dysarthria, pronunciation movement, interval distribution, Electromagnetic Articulography（EMA）

摘要： 为研究构音障碍患者和正常人发音运动数据的差异，利用多伦多大学开发的TORGO数据库，采用对数正态分布拟合及正态分布拟合的方法，分别以25 mm和2.58个标准差为阈值，对比分析构音障碍患者和正常人在舌根、舌中、舌尖处的发音异常运动区间所占比例。研究表明，与正常人相比，构音障碍患者舌部在前后、左右、上下三方向的发音运动区间较宽，发音运动异常区间所占比例大于正常人；在以2.58个标准差为阈值时，构音障碍患者舌部左右方向发音异常运动区间占10%左右，而正常人在1%左右；同时相比前后、上下方向，构音障碍患者和正常人在舌部左右方向的发音运动区间更窄。

关键词: 构音障碍, 发音运动, 区间分布, 电磁发音仪（EMA）