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Toyohashi University of Technology,
Department of Computer Science and Engineering
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We are exploring to understand scientifically how we perceive the world/environment and communicate with others. Embodied perception is a main perspective in our research. Our perceptual process and communication are crucially connected to our body physically and psychologically. We are investigating three research themes based on this perspective.

Science for Mobile Observer

To understand perception for mobile observers, we are investigating self-motion perception, 3-D objects, scene and human-body recognition across viewpoints with psychophysical experiments. To know interaction of perception and action, we are measuring motor behavior and perception during action such as walking and driving a car. Parts of driving study are cooperative studies with a motor company.


Driving Simulator

Selected papers:

Kitazaki, M. (2013), Effects of retinal position on visuo-motor adaptation of visual stability in a virtual environment, i-Perception, 4(4), 242-252.
Tani, Y., Araki, K., Nagai, T., Koida, K., Nakauchi, S. and Kitazaki, M. (2013), Enhancement of glossiness perception by retinal-image motion: additional effect of head-yoked motion parallax, PLOS ONE, 8(1): e54549.
Kawahara, J., Yanase, K., and Kitazaki, M. (2012), Attentional capture by the onset and offset of motion signals outside the spatial focus of attention, Journal of Vision, 12(12): 10.
Kitazaki, M. and Kimura, T. (2010), Effects of long-term adaptation to sway-yoked visual motion and galvanic vestibular stimulation on visual and vestibular control of posture, Presence: Teleoperators and Virtual Environments, 19(6), 544-556.
Kitazaki, M. and Sato, T. (2003), Attentional modulation of self-motion perception, Perception, 32, 475-484.

Keywords: self-motion, optic flow, galvanic vestibular stimulation, perception and action, driving simulator

Science for Perceptual Reality

To explore what is realty, we are investigating material perception, perceptual aesthetics, lightness perception, self-motion perception, and human-body perception in virtual-realty environments. Cross-modal studies such as vision-vestibular interaction on postural control and face-voice interaction on emotions are included in the theme. We are developing a system to experience tele-presence of walking and a system for modifying human body experience.

Selected papers:

Nagai, T., Matsushima, T., Koida, K., Tani, Y., Kitazaki, M., and Nakauchi, S. (2015), Temporal properties of material categorization and material rating: visual vs non-visual material features. Vision Research, 115B, 259-270.
Tani, Y. Nagai, T., Koida, K., Kitazaki, M. and Nakauchi, S. (2014), Experts and novices use the same factors, but differently: To evaluate pearl quality, PLOS ONE,9(1): e86400. doi:10.1371/journal.pone.0086400
Morita, T., Slaughter, V., Katayama, N., Kitazaki, M., Kakigi, R. and Itakura, S. (2012), Infant and adult perceptions of possible and impossible body movements: An eye-tracking study, Journal of Experimental Child Psychology,113,401-414.
Kitazaki, M., Kobiki, H., and Maloney, L. T. (2008), Effect of pictorial depth cues, binocular disparity cues and motion parallax depth cues on lightness perception in three-dimensional virtual scenes, PLoS ONE, 3(9): e3177. doi:10.1371/journal.pone.0003177.

Keywords: human body and movement, embodiment, virtual reality, cross-modal perception, perceptual development, human-robot interaction

Science for Implicit Social Cognition

We interact with others naturally, and perceive the world and others based on social communications. The crucial factor for implicit social cognition is our body. We are investigating body perception, neurophysiology of empathy, equity, and moral. We found that the preverbal infants show sympathy for others in distress and that humans can empathize with humanoid robots..

Selected papers:

Suzuki, Y., Galli, L., Ikeda, A., Itakura, S. and Kitazaki, M. (2015). Measuring empathy for human and robot hand pain using electroencephalography. Scientific Reports, 5:15924; doi: 10.1038/srep15924
Press release
News: Newsweek, Wired UK, Huffpost Science, Dailymail UK, Motherboad 

Kanakogi, Y., Okumura, Y., Inoue, Y., Kitazaki, M., and Itakura, S. (2013), Rudimentary sympathy in preverbal infants: Preference for others in distress, PLOS ONE, 8(6): e65292.
Press release

Tamura, T., Gunji, A., Takeichi, H., Shigemasu, H., Inagaki, M., Kaga, M., and Kitazaki, M. (2012), Audio-vocal monitoring system revealed by mu-rhythm activity, Frontiers in Psychology, 3:225. doi:10.3389/fpsyg.2012.00225.

Keywords: Body perception, empathy, sympathy, equity, moral