INSIDE the Laboratory

Human Information Systems Division

Visual Cognition and Systems Laboratory

Satoshi Shioiri, Professor
Ichiro Kuriki, Associate Professor
Kazumichi Matsumiya, Associate Professor

http://www.riec.tohoku.ac.jp/lab/shioiri/index-e.html

It is not difficult to imagine how living becomes hard if we lose our vision and there is no doubt of the importance of vision in life. Understanding the brain functions for vision is one of the most important issues in science and technology to improve the quality of human life and society. Since the foundation of the laboratory in 2005, we (Satoshi Shioiri, Ichiro Kuriki and Kazumichi Matsumiya) have been working on vision and vision-related brain functions both in science and engineering fields with brilliant students from Japan and other countries (China, Sweden, Thailand, USA, Taiwan and Venezuela).

We investigate the human brain through visual functions using psychophysics, brain imaging and computer simulations, and apply the knowledge to human engineering and image engineering. Our research field covers visual spatial perception, 3D perception, color vision, visual attention and visual-haptic integration. The following is a list of recent research topics.

  • Measurements and modeling of characteristics of visual attention.
  • Investigation of motion, depth and color perception at early and middle level visual processes.
  • Representation of color information in the human brain
  • Separation and integration of visual information in the human brain
  • Cross modal processing between visual and haptic information.

One of our recent findings is the interaction of haptic and visual information at a visual process specific to peripersonal space1). We reported a visual motion aftereffect (MAE) that shows spatial selectivity in hand-centered coordinates. The MAE is an illusion of visual motion resulting from adaptation to a moving pattern and normally occurs with retinal overlap between adaptor and test. MAEs occurred without retinal overlap between the adaptor and test when the adaptor and test were presented at the same position relative to a hand. This suggests that the visual system has a perceptual representation of the space encoded in body-part-centered coordinates, which is useful for guiding movements of one's body parts.

1) Matsumiya K, Shioiri S, Current Biology 24 (2), 165-169, 2014.

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