側音化構音の5症例

概要

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The articulatory gestures in lateral articulation, one type of articulation disorder, were studied in five (three male and two female) cases-ages six to twenty-six-with four unilateral and one bilateral articulation. Observation of speech production was carried out by dynamic palatograph, X-ray, and testing with stainless steel board. The results are summarized as follows: 1. Via observation by dynamic palatogram and X-ray photos, the tongue completely contacts the hard palate and the air-stream does not flow to the center of the oral cavity when lateral articulation sounds are produced. 2. The air-stream produced in all cases with lateral articulation does not flow to the center of the stainless steel board. 3. The vowel [i], consonants followed by the vowel [i], the glide [j], and the consonants [pj] [bj] [mj] [rj] [kj] [gj] [∫] [t∫] [d3] [ç] [s] [ts] [dz] [ke] [ge] are pronounced with lateral articulation. 4. After articulation training, the tongue movements in all cases with lateral articulation become normal, that is, the air-stream flows to the center of the oral cavity.