Extraction of ultradian rhythm component reflecting REM-NREM sleep cycle from core body temperature. - Hiroko Sawai; Tetsuo Kurahashi; Maki Matsumoto; Emi Koyama (LifeTech, 2020)

The relationship between each length of REM - NREM sleep cycle and sleep stage. - Hiroko Sawai; Maki Matsumoto; Emi Koyama (LifeTech, 2021)

Application of a Communication Robot as a Moderator for Recreational Speech Rehabilitation. - Atsushi Shimoda; Shiroh Itai; Toshimitsu Hamada; Maki Matsumoto (IIAI-AAI, 2022)