Proto-symbol emergence. - Karl F. MacDorman; Koji Tatani; Yoji Miyazaki; Masanao Koeda (IROS, 2000)

Protosymbol emergence based on embodiment: Robot experiments. - Karl F. MacDorman; Koji Tatani; Yoji Miyazaki; Masanao Koeda; Yoshihiko Nakamura (ICRA, 2001)

Polynomial Design of the Nonlinear Dynamics for the Brain-Like Information Processing of Whole Body Motion. - Masafumi Okada; Koji Tatani; Yoshihiko Nakamura (ICRA, 2002)

Dimensionality reduction and reproduction with hierarchical NLPCA neural networks-extracting common space of multiple humanoid motion patterns. - Koji Tatani; Yoshihiko Nakamura (ICRA, 2003)