Dialog context dependencies of utterances generated from concept reperesentation. - Yoichi Yamashita; Keiichi Tajima; Yasuo Nomura; Riichiro Mizoguchi (ICSLP, 1994)

Factors affecting native Japanese speakers' production of intrusive (epenthetic) vowels in English words. - Keiichi Tajima; Donna Erickson; Kyoko Nagao (INTERSPEECH, 2000)

Neural processes underlying perceptual learning of a difficult second language phonetic contrast. - Daniel E. Callan; Keiichi Tajima; Akiko E. Callan; Reiko Akahane-Yamada; Shinobu Masaki (INTERSPEECH, 2001)

Perceptual learning of second-language syllable rhythm by elderly listeners. - Keiichi Tajima; Reiko Akahane-Yamada; Tsuneo Yamada (INTERSPEECH, 2002)

Learning-induced neural plasticity associated with improved identification performance after training of a difficult second-language phonetic contrast. - Daniel E. Callan; Keiichi Tajima; Akiko M. Callan; Rieko Kubo; Shinobu Masaki; Reiko Akahane-Yamada (NeuroImage, 2003)

Perceptual training of singleton and geminate stops in Japanese language by Korean learners. - Mee Sonu; Keiichi Tajima; Hiroaki Kato; Yoshinori Sagisaka (INTERSPEECH, 2009)

The effect of a word embedded in a sentence and speaking rate variation on the perceptual training of geminate and singleton consonant distinction. - Mee Sonu; Keiichi Tajima; Hiroaki Kato; Yoshinori Sagisaka (INTERSPEECH, 2010)

Perceptual Studies of Japanese Geminate Insertion Phenomena Based on Timing Control Characteristics. - Mee Sonu; Keiichi Tajima; Hiroaki Kato; Yoshinori Sagisaka (ICPhS, 2011)

Do Native-language Loanwords Affect Second-language Speech Perception? - Keiichi Tajima (ICPhS, 2011)

Perceptual Training of Vowel Length Contrast of Japanese by L2 Listeners: Effects of an Isolated Word versus a Word Embedded in Sentences. - Mee Sonu; Keiichi Tajima; Hiroaki Kato; Yoshinori Sagisaka (INTERSPEECH, 2011)

Is the vowel length contrast in Japanese exaggerated in infant-directed speech? - Keiichi Tajima; Kuniyoshi Tanaka; Andrew Martin; Reiko Mazuka (INTERSPEECH, 2013)

Production of a non-contrastive sound in a second language. - Keiichi Tajima; Mafuyu Kitahara; Kiyoko Yoneyama (ICPhS, 2015)

Onset-coda asymmetry in second-language syllable perception by Japanese teachers of English. - Kiyoko Yoneyama; Keiichi Tajima (ICPhS, 2015)

Perception of Non-Contrastive Variations in American English by Japanese Learners: Flaps are Less Favored Than Stops. - Kiyoko Yoneyama; Mafuyu Kitahara; Keiichi Tajima (INTERSPEECH, 2017)