Kim Heejin, Martin Katie, Hasegawa-Johnson Mark, Perlman Adrienne
Beckman Institute, University of Illinois, Urbana-Champaign, IL, USA.
Clin Linguist Phon. 2010 Oct;24(10):759-70. doi: 10.3109/02699206.2010.497238.
This paper analyses consonant articulation errors in dysarthric speech produced by seven American-English native speakers with cerebral palsy. Twenty-three consonant phonemes were transcribed with diacritics as necessary in order to represent non-phoneme misarticulations. Error frequencies were examined with respect to six variables: articulatory complexity, place of articulation, and manner of articulation of the target phoneme; and change in articulatory complexity, place, and manner resulting from the misarticulation. Results showed that target phonemes with high articulatory complexity were most often misarticulated, independent of intelligibility, but low-intelligibility speakers reduced the complexity of target consonants more frequently. All speakers tended to misarticulate to the adjacent place of the target place, but this pattern was most prominent for high-intelligibility speakers. Low- and mid-intelligibility speakers produced more manner errors than high-intelligibility speakers. Based on these results, a two-part model of consonant articulation errors is proposed for CP-associated spastic dysarthia.
本文分析了7名患有脑瘫的美国英语母语者的构音障碍性言语中的辅音发音错误。为了表示非音素性错发音，必要时用变音符标注了23个辅音音素。针对六个变量检查了错误频率：目标音素的发音复杂度、发音部位和发音方式；以及由错发音导致的发音复杂度、部位和方式的变化。结果表明，发音复杂度高的目标音素最常出现错发音，与可懂度无关，但可懂度低的说话者更频繁地降低了目标辅音的复杂度。所有说话者都倾向于将目标发音部位错发为相邻部位，但这种模式在可懂度高的说话者中最为明显。可懂度低和中等的说话者比可懂度高的说话者产生更多的发音方式错误。基于这些结果，针对与脑瘫相关的痉挛性构音障碍，提出了一个由两部分组成的辅音发音错误模型。
