Rong Panying, Loucks Torrey, Kim Heejin, Hasegawa-Johnson Mark
Department of Speech and Hearing Science, University of Illinois, Champaign, 61820, USA.
Clin Linguist Phon. 2012 Sep;26(9):806-22. doi: 10.3109/02699206.2012.706686.
A multimodal approach combining acoustics, intelligibility ratings, articulography and surface electromyography was used to examine the characteristics of dysarthria due to cerebral palsy (CP). CV syllables were studied by obtaining the slope of F2 transition during the diphthong, tongue-jaw kinematics during the release of the onset consonant, and the related submental muscle activities and relating these measures to speech intelligibility. The results show that larger reductions of F2 slope are correlated with lower intelligibility in CP-related dysarthria. Among the three speakers with CP, the speaker with the lowest F2 slope and intelligibility showed smallest tongue release movement and largest jaw opening movement. The other two speakers with CP were comparable in the amplitude and velocity of tongue movements, but one speaker had abnormally prolonged jaw movement. The tongue-jaw coordination pattern found in the speakers with CP could be either compensatory or subject to an incompletely developed oromotor control system.
采用一种结合声学、可懂度评分、发音描记法和表面肌电图的多模态方法来研究脑瘫（CP）所致构音障碍的特征。通过获取双元音期间F2过渡的斜率、起始辅音释放时的舌颌运动学以及相关的颏下肌肉活动，并将这些测量结果与言语可懂度相关联，对CV音节进行了研究。结果表明，F2斜率的更大降低与CP相关构音障碍中较低的可懂度相关。在三名患有CP的受试者中，F2斜率和可懂度最低的受试者舌部释放运动最小，下颌张开运动最大。另外两名患有CP的受试者在舌部运动的幅度和速度方面相当，但其中一名受试者下颌运动异常延长。在患有CP的受试者中发现的舌颌协调模式可能是代偿性的，或者受发育不完全的口运动控制系统影响。
