Takeo Tsujii

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About

Takeo Tsujii is a pioneering researcher in human-robot interaction, with a specific focus on the neurophysiological effects of companion robots. His key research areas include affective computing, social robotics, and the application of functional near-infrared spectroscopy (fNIRS) to measure brain activity during human-robot engagement. Tsujii’s major contributions center on demonstrating how interaction with the seal robot PARO—a therapeutic robotic pet—can modulate brain function. In his most cited work (2012, 13 citations), he showed that participants exhibited distinct prefrontal cortex activity during and after interacting with an active PARO compared to an inactive one, suggesting that the robot’s responsive behavior induces measurable neural changes. His earlier pilot study (2011, 11 citations) laid the groundwork by establishing fNIRS as a viable tool for capturing these brain dynamics. Though his citation counts are modest, Tsujii’s work is notable for bridging robotics and neuroscience, providing early empirical evidence that social robots can influence emotional and cognitive states. His research has implications for therapeutic applications, particularly in elderly care and autism intervention, where PARO is now widely used.