Research Institute of Electrical Communication Tohoku University


Satoshi Shioiri,Professor

Shuichi Sakamoto,Associate Professor

Shuishi Sakamoto, Satoshi Shioiri

Research Activities

To create computational models of the process that the human brain integrates multiple sensory inputs from the outside world, we are investigating the visual and auditory functions in the human brain for implementing these functions in hardware under biologically plausible settings. Our approaches include psychophysics, brain wave measurements, and computer simulations.

Laboratory Web Page

ECEI Web Page

Visual Cognition and Systems(Prof. Shioiri)

Modeling the processes of human vision based on the findings of the strategies that the visual system uses, we plan to propose appropriate methods for evaluation of image qualities, efficient way of image presentation and evaluation of visual environments in general. We also investigate dynamic selection process in vision with or without attention to realize prediction system of human perception and action in the future.

Research topics

  •  Measurements of spatial and temporal characteristics of visual attention.
  • Modeling control system of eye movements and visual attention
  • Investigation of early, middle and late vision of 3D perception.

Adaptive Cognition and Action Systems(Assoc. Prof. Matsumiya)

Humans can perform various actions based on the recognition of the outside world that is constructed through multiple sensory inputs such as vision and touch, even though they frequently move their own body parts in the environment. Here we investigate the adaptive-process and functions of the human cognitive system for action through psychophysical experiments. On the basis of the experimental evidence, we aim to establish design principles for constructing qualitatively different information and communication environment through vision and touch.

Research topics

  • Integration of visual and haptic information in the human perceptual system
  • Mechanisms in visual perception and action
  • Spatial perception during bodily actions

Auditory and Multisensory Information Systems(Assoc. Prof. Sakamoto)

We study the mechanism of human multimodal processing, including hearing. In particular, we focus on speech perception as an audio-visual process, the judgment of auditory space during motion and the impression of a sense-of-reality in multimodal content. Such knowledge is crucial to develop advanced communication and information systems. Based on this knowledge, we are developing future auditory information systems.

Research topics

  •  Mechanism of multisensory information processing including hearing.
  • Development of high-definition 3D sound space acquisition systems
  • Auditory information systems based on multisensory information processing.

We perceive the visual world remains stable across saccadic eye movements. How does the visual system achieve visual stability across saccades? Our findings suggest that luminance-based transient signals make an important contribution to visual stability, and to the relative weight of retinal and extraretinal information in target localization.