ABSTRACT
We have already seen that a virtual reality application is designed on three levels of Immersion and Interaction, the first level being the sensorimotor I2. The techniques of virtual reality use behavioural interfaces (sensory and/or motor) to physically join the computer with a human being. The design of such interfaces aims at creating a hardware device that has efficient metrological characteristics that must, if possible, correspond to the maximum psychophysiological capacities of senses and/or human motor responses. Under these conditions, it is indispensable to have a clear and precise image of the human sensorimotor behaviour in the real world to effectively analyse the behavioural interfaces as well as the sensorimotor I2. Hence we are going to discuss the characteristics of specific sensory organs (vision, hearing, touch, smell and taste) and proprioceptive organs that allow spatial location, balance, movements and displacements.
