
Chapter 3
Human senses
Philippe Fuchs, Moustapha Hafez, Mohamed Benali Koudja
and Jean-Paul Papin
3.1 INTRODUCTION
We have already seen that a virtual reality device is designed and assessed on three
levels of Immersion and Interaction, the first level being the sensorimotor I
2
. The tech-
niques 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 capacities of senses and/or human motor responses. Under
these conditions, it