Study of Articulatory Interaction between Native and Non-native phonemes by use of EPG and Acoustic analysis

腭-舌接触模式进行了分析日语音素，非母语英语/r/，和/l/发出的母语为日本人。使用由多维标度（MDS）生成的音素地图分析音素的腭舌接触模式之间的相互相似性，并比较接触模式的变化速度。视听培训在非母语的语音歧视进行了本地日本成年人使用视听录音的母语英语发音90 rl单词对，发音，声学，感知和皮质表征的变化进行了分析本地和非本地语音对比。从两个优秀的英语发言者那里记录下来的英语/r/和/l/的话语在地图上彼此明显分开。英语中/l/的位置比日语中/r/的位置更靠前。英语优秀者接触模式的变化速度也更接近日语/r/而不是英语/r/。这些结果表明，发音运动和由此产生的语音声音的知觉分类是依赖于特定的语言的方式，但分类可以可塑性修改，即使在成年后通过training.Based这些发现，声学方法的有用性进行了讨论，适当的评估交际价值的发音障碍。这些结果表明，腭舌接触模式的发音分析为语言习得提供了有用的信息。

Palato-lingual contact pattems were analyzed for Japanese phonemes, non-native English/r/, and /l/ uttered by native Japanese speakers. Mutual similarities between the palatolingual contact patterns for the phonemes were analyzed using a phoneme map generated by a multi-dimensional scaling(MDS), and variation speed in the contact patterns was compared. Audiovisual training in non-native speech discrimination was conducted on native Japanese adults using audiovisual recordings of native English speakers articulating 90 rl word pairs, and analysis of changes in articulatory, acoustical, perception and cortical representations of native and non-native phonetic contrasts was performed. Utterances of English /r/ and /l/ recorded from two excellent speakers of English dearly separated from each other on the map. Utterances of English /l/ positioned doser to those of Japanese /r/ than those of English/r/. The variation speed in the contact pattems was also closer to that of Japanese /r/ than English /r/ for the excellent speakers of English. These results indicated that perceptual categorization of articulatory movements and resulting phonetic sounds is listenerdependent in a language-specific way, but categorization can be plastically modified even in adulthood through training.Based on these findings, the usefulness of acoustic approaches for proper assessment of communicative values of articulations of disordered is discussed. These results suggested that articulatory analyses of palatolimgual contact patterns provide useful information on the language acquisition.