Conventional telecommunication interfaces, such as telephone, TV-phone and TV-conferences, were limited to activate auditory and visual perceptions, which do not satisfy requirements for more complete interaction between humans and between human and machine. For designing sophisticated interactive interfaces, we need to know how we use various sensory information not only for perception but also for action. The aim of our studies of sensory and motor control is to provide fundamental ideas and prerequisites for future interactive and natural interface design by understanding the mechanisms of sensorimotor processing in the brain.