Bressmann Tim, Radovanovic Bojana, Harper Susan, Klaiman Paula, Fisher David, Kulkarni Gajanan V
Cleft Palate Craniofac J. 2018 Jul;55(6):876-882. doi: 10.1597/16-096. Epub 2018 Feb 26.
Many speakers with cleft palate develop atypical consonant productions, especially for pressure consonants such as plosives, fricatives, and affricates. The present study investigated the nature of nasal sound errors. The participants were eight female and three male speakers with cleft palate between the ages of 6 to 20. Speakers were audio-recorded, and midsagittal tongue movement was captured with ultrasound. The speakers repeated vowel-consonant-vowel with the vowels /α/, /i/, and /u/ and the alveolar and velar nasal consonants /n/ and /η/. The productions were reviewed by three listeners. The participants showed a variety of different placement errors and insertions of plosives, as well as liquid productions. There was considerable error variability between and within speakers, often related to the different vowel contexts. Three speakers co-produced click sounds. The study demonstrated the wide variety of sound errors that some speakers with cleft palate may demonstrate for nasal sounds. Nasal sounds, ideally in different vowel contexts, should be included in articulation screenings for speakers with cleft palate, perhaps more than is currently the case.
许多腭裂患者会出现非典型的辅音发音，尤其是对于爆破音、摩擦音和塞擦音等压力辅音。本研究调查了鼻音错误的本质。参与者为8名年龄在6至20岁之间的腭裂女性和3名腭裂男性。对参与者进行了录音，并用超声波捕捉了矢状面中部的舌头运动。参与者重复发包含元音/α/、/i/和/u/以及齿龈鼻音和软腭鼻音/n/和/η/的元音-辅音-元音组合。由三名听众对发音进行评估。参与者表现出各种不同的爆破音发音位置错误和插入错误，以及流音发音错误。不同参与者之间以及同一参与者内部存在相当大的错误变异性，这通常与不同的元音语境有关。三名参与者同时发出了搭嘴音。该研究表明，一些腭裂患者在鼻音方面可能会出现各种各样的发音错误。对于腭裂患者的发音筛查，理想情况下应在不同的元音语境中纳入鼻音检查，或许比目前的情况更应如此。
