Dagenais P A, Critz-Crosby P
University of Alabama, Birmingham.
J Speech Hear Res. 1991 Dec;34(6):1423-35. doi: 10.1044/jshr.3406.1423.
Ten normal hearing (NH) and 18 profoundly hearing-impaired (HI) children were recorded using palatometry and audiotape while producing the consonants /t,d,k,g,s,z,integral of/ in CV syllables (V = /i, a/). The lingual-palatal contacts produced by the NH subjects for the alveolar stops were undifferentiated across voicing and vowel environment differences. Lingual-palatal contact patterns for the velar stops differed for vowel environment but not for voicing. The /s/ and /z/ sibilants were distinguished by groove width but not anterior place. Groove locations for /s/ and /z/ were more anterior than groove locations for /integral of/. The anterior grove location for the /integral of/ was vowel dependent. The HI subjects produced idiosyncratic lingual-palatal contact patterns. As patterns for individuals became more unique and less variable across the syllable stimuli, listener identifications showed correspondingly incorrect, undifferentiated responses. The atypical contact patterns used by the HI subjects often required interpretation of possible tongue activities during attempts at the various consonants.
对10名听力正常（NH）儿童和18名极重度听力受损（HI）儿童在发出CV音节（V = /i, a/）中的辅音/t、d、k、g、s、z、/integral of/时，使用腭动描记法和录音带进行了记录。NH受试者发出齿龈塞音时，舌腭接触在浊音和元音环境差异方面没有区别。软腭塞音的舌腭接触模式在元音环境中有所不同，但在浊音方面没有差异。/s/和/z/擦音通过凹槽宽度区分，但在前部位置上没有区别。/s/和/z/的凹槽位置比/integral of/的凹槽位置更靠前。/integral of/的前部凹槽位置取决于元音。HI受试者产生了独特的舌腭接触模式。随着个体模式在音节刺激中变得更加独特且变化更少，听众识别相应地表现出不正确、无区别的反应。HI受试者使用的非典型接触模式在尝试发出各种辅音时，常常需要对可能的舌头活动进行解读。
