We will elucidate the mechanisms of well-being in individuals and society using methods such as hyperscanning fMRI, which allows for simultaneous measurement of brain activity from multiple individuals during communication.

Takahiko Koike

Takahiko Koike, Ph.D.

Unit Leader, Inter-Individual Brain Dynamics Collaboration Unit, BTCC
takahiko.koike [at] riken.jp

Research Overview

We will conduct research from the perspective of human sociability on the process by which individuals independently generate a state of well-being, as well as the process by which they experience a state of well-being through belonging to society. Our goal is to elucidate the processes by which these states of well-being occur, how they interact with each other, and the neural basis underlying them. To achieve this, we will use methods such as (1) psychological experiments, (2) brain functional imaging, primarily using hyperscanning fMRI, and (3) mathematical modeling studies.

Main Research Fields

Complex systems

Related Research Fields

Informatics / Social sciences / Basic - Social brain science / Cognitive science


Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.

  1. * Ayumi Yoshioka, Hiroki C Tanabe, Motofumi Sumiya, Eri Nakagawa, Shuntaro Okazaki, Takahiko Koike, Norihiro Sadato:
    “Neural Substrates of Shared Visual Experiences: A Hyperscanning fMRI Study”
    Social Cognitive and Affective Neuroscience, 16(12), 1264–1275. (2021).
  2. * Kohei Miyata, Takahiko Koike, Eri Nakagawa, Tokiko Harada, Motofumi Sumiya, Tetsuya Yamamoto, Norihiro Sadato
    “Neural substrates for sharing intention in action during face-to-face imitation”
    NeuroImage, 117196 (2021).
  3. * Takahiko Koike, Hiroki C Tanabe, Saori Adachi-Abe, Shuntaro Okazaki, Eri Nakagawa, Akihiro T Sasaki, Koji Shimada, Sho K Sugawara, Haruka K Takahashi, Kazufumi Yoshihara, Norihiro Sadato
    “Role of the right anterior insular cortex in joint attention-related identification with a partner”
    Social Cognitive and Affective Neuroscience, 14(10), 1131-1145. (2019).
  4. * Masaki O Abe, Takahiko Koike, Shuntaro Okazaki, Sho K Sugawara, Kohske Takahashi, Katsumi Watanabe, Norihiro Sadato
    “Neural correlates of online cooperation during joint force production”
    NeuroImage, 191, 150-161. (2019).
  5. * Takahiko Koike, Motofumi Sumiya, Eri Nakagawa, Shuntaro Okazaki, Norihiro Sadato
    “What makes eye contact special? Neural substrates of on-line mutual eye-gaze: a hyperscanning fMRI study”
    eNeuro, 6, 1. (2019).
  6. * Motofumi Sumiya, Takahiko Koike, Shuntaro Okazaki, Ryo Kitada, Norihiro Sadato
    “Brain networks of social action-outcome contingency: The role of the ventral striatum in integrating signals from the sensory cortex and medial prefrontal cortex”
    Neuroscience research, 123, 43-54. (2017).
  7. * Takahiko Koike, Hiroki C Tanabe, Shuntaro Okazaki, Eri Nakagawa, Akihiro T Sasaki, Koji Shimada, Sho K Sugawara, Haruka K Takahashi, Kazufumi Yoshihara, Jorge Bosch-Bayard, Norihiro Sadato
    “Neural substrates of shared attention as social memory: A hyperscanning functional magnetic resonance imaging study”
    NeuroImage, 125, 401-412. (2016).
  8. * Takahiko Koike, Hiroki C Tanabe, Norihiro Sadato
    Hyperscanning neuroimaging technique to reveal the “two-in-one” system in social interactions
    Neuroscience research, 90, 25-32. (2015).
  9. * Shuntaro Okazaki, Masako Hirotani, Takahiko Koike, Jorge Bosch-Bayard, Haruka K Takahashi, Maho Hashiguchi, Norihiro Sadato
    “Unintentional interpersonal synchronization represented as a reciprocal visuo-postural feedback system: a multivariate autoregressive modeling approach”
    PLoS One, 10(9), e0137126. (2015).
  10. * Hiroki C Tanabe, Hirotaka Kosaka, Daisuke N Saito, Takahiko Koike, Masamichi J Hayashi, Keise Izuma, Hidetsugu Komeda, Makoto Ishitobi, Masao Omori, Toshio Munesue, Hidehiko Okazawa, Yuji Wada, Norihiro Sadato
    “Hard to “tune in”: neural mechanisms of live face-to-face interaction with high-functioning autistic spectrum disorder”
    Frontiers in human neuroscience, 6, 268. (2012).

Lab Members

Principal investigator

Takahiko Koike
Unit Leader