Dromey Christopher, Sanders Marybeth
Brigham Young University, Department of Communication Disorders, 133 John Taylor Building, Provo, UT 84602, USA.
J Commun Disord. 2009 Nov-Dec;42(6):397-407. doi: 10.1016/j.jcomdis.2009.05.001. Epub 2009 May 9.
Electropalatometry is a useful clinical and research tool for measuring linguapalatal contact. The goal of this study was to examine intra-speaker variability in performance. Twenty individuals spoke VCV nonsense words using a schwa in the initial position, the 15 palatal consonants, and three corner vowels, /a/, /i/, /u/. A variability index was created to examine speaker consistency. Different aspects of articulation (i.e. place, manner, voicing, coarticulation) were compared. Significant differences for variability were found for place of articulation in the /i/ vowel context and for manner of articulation in the /a/ vowel context. Also for the /a/ vowel, significant differences were found between the commonly misarticulated /l/, /r/, and /s/. The data reveal differences in production variability across sounds within an individual, as well as from one speaker to another. This knowledge of typical performance may guide the interpretation of data from disordered speakers in future studies.
The reader will be able to: (1) Describe how articulatory performance and variability can be assessed with the palatometer; (2) Describe which sounds are typically most or least variable in their production; and (3) Understand the significance of individual speaker differences in normal consonant articulation.
电腭测量法是一种用于测量舌腭接触的有用的临床和研究工具。本研究的目的是检验说话者内部的表现变异性。20名个体使用初始位置的央元音、15个腭辅音以及三个角元音/a/、/i/、/u/说出VCV无意义音节。创建了一个变异性指数来检验说话者的一致性。对发音的不同方面（即发音部位、发音方式、浊音、协同发音）进行了比较。发现在/i/元音语境下发音部位的变异性以及/a/元音语境下发音方式的变异性存在显著差异。同样对于/a/元音，在常被错发的/l/、/r/和/s/之间也发现了显著差异。数据揭示了个体内不同音素在发音变异性上的差异，以及不同说话者之间的差异。这种关于典型表现的知识可能会指导未来对发音障碍者数据的解读。
读者将能够：（1）描述如何用电腭计评估发音表现和变异性；（2）描述哪些音素在发音时通常变异性最大或最小；以及（3）理解正常辅音发音中个体说话者差异的重要性。
