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RIKEN Information R&D and Strategy Headquarters Psychological Process Research Team

Team Leader: Wataru Sato (Ph.D.)

Research Summary

Wataru Sato (Ph.D.)

We conduct research to elucidate the computational mechanisms of human mind (emotions, cognition, and behavior) to develop robots with mind.

Specifically, we conduct the following research.

  • Computational elucidation of human mind; its implementation in robots collaborating with engineers.
  • Psychological evaluation of robots' functions.
  • Interdisciplinary research across psychology, informatics, and robotics, especially on emotional communication.

Main Research Fields

  • Complex Systems

Related Research Fields

  • Engineering
  • Informatics
  • Humanities & Social Sciences
  • Humanities
  • Social Sciences
  • Interdisciplinary Science & Engineering
  • Mathematical & Physical Sciences
  • Biological Sciences
  • Biology
  • Medicine, Dentistry & Pharmacy
  • Experimental psychology
  • Basic / Social brain science
  • Intelligent robotics


  • Emotion
  • Facial expression
  • Social interaction
  • Human-robot interaction
  • Neuroimaging

Selected Publications

  • 1. Sato, W., Yoshikawa, S., and Fushiki, T.:
    "Facial EMG activity is associated with hedonic experiences but not nutritional values while viewing food images"
    Nutrients (in press).
  • 2. Nishimura, S., Kimata, D., Sato, W., Kanbara, M., Fujimoto, Y., Kato, H., and Hagita, N.:
    "Positive emotion amplification by representing excitement scene with TV chat agents"
    Sensors (in press).
  • 3. Sato, W., Kochiyama, T., and Yoshikawa, S.:
    "Physiological correlates of subjective emotional valence and arousal dynamics while viewing films"
    Biological Psychology, 157, 107974 (2020).
  • 4. Hsu, C.-T., Sato, W., and Yoshikawa, S.:
    "Enhanced emotional and motor responses to live vs. videotaped dynamic facial expressions"
    Scientific Reports, 10, 16825 (2020).
  • 5. Sato, W., Rymarczyk, K., Minemoto, K., and Hyniewska, S.:
    "Cultural differences in food detection"
    Scientific Reports, 10, 17285 (2020).
  • 6. Sato, W., Uono, S., and Kochiyama, T.:
    "Neurocognitive mechanisms underlying social atypicalities in autism: Weak amygdala’s emotional modulation hypothesis"
    Frontiers in Psychiatry, 11, 864 (2020).
  • 7. Sato, W.:
    "Association between dieting failure and unconscious hedonic responses to food"
    Frontiers in Psychology, 11, 2089 (2020).
  • 8. Sato, W., Minemoto, K., Sawada, R., Miyazaki, Y., and Fushiki, T.:
    "Image database of Japanese food samples with nutrition information"
    PeerJ, 8, e9206 (2020).

Lab Members

Principal investigator

Wataru Sato
Team Leader

Core members

Chun-Ting Hsu
Research Scientist
Akie Saito
Research Scientist
Shushi Namba
Research Scientist

Contact Information

3rd Floor, Advanced Telecommunications Research Institute International
2-2-2 Hikaridai Seika-cho, Sorakugun, Kyoto
619-0288 Japan (Kansai Science City)
Email: wataru.sato.ya [at] riken.jp