Cortical activation with speech in cochlear implant users: a study with positron emission tomography. - Yasushi Naito; Hidehiko Okazawa; Iwao Honjo; Yosaku Shiomi; Haruo Takahashi; Waka Hoji; Michio Kawano; Hiroshi Ishizu; Sadahiko Nishizawa; Yoshiharu Yonekura; Junji Konishi (ICSLP, 1994)