Yorkston K M, Beukelman D R, Honsinger M J
Department of Rehabilitation Medicine, University of Washington, Seattle 98195.
Arch Phys Med Rehabil. 1989 Apr;70(4):313-7.
Twenty-four dysarthric speakers with etiologies of brain injury or stroke were placed into one of two groups based on aerodynamic measures of velopharyngeal status. Group I contained 13 individuals who were velopharyngeally incompetent in that nasal air flow was always noted during the stop phase of voiceless plosive sounds. Group II contained 11 individuals who at times achieved complete velopharyngeal closure. Certain measures of perceived articulatory adequacy were found to distinguish between the two groups. Specifically, speakers who were velopharyngeally incompetent produced an articulatory error pattern characterized by better performance for the consonant subcategory nasals-glides than for pressure consonants. Speakers who at times were achieving velopharyngeal closure did not exhibit a marked difference between these two consonant subcategories. Clinical use of measurement of articulatory adequacy as a gross indicator of velopharyngeal competence is suggested and limitations are discussed.
24名患有构音障碍且病因是脑损伤或中风的患者，根据腭咽状况的空气动力学测量结果被分为两组。第一组有13名个体，他们存在腭咽功能不全，即在清塞音的停顿阶段总是能察觉到鼻气流。第二组有11名个体，他们有时能实现完全的腭咽闭合。研究发现，某些可感知的发音适当性测量指标能够区分这两组。具体而言，腭咽功能不全的患者产生的发音错误模式的特点是，鼻音-滑音这一辅音子类别的表现优于塞擦音。有时能实现腭咽闭合的患者在这两个辅音子类别的表现上没有显著差异。本文建议将发音适当性测量作为腭咽功能的总体指标用于临床，并讨论了其局限性。
