In order to survive in dynamic and often hostile environments, animals are able to adapt their behaviors according to the current situation. As summarized by the ethologist Manning Manning79, the behavior of an animal ``includes all those processes by which the animal senses the external world and the internal state of its body and responds to changes which it perceives.'' This definition emphasizes the crucial dependence of animal behavior on perception, for without perception, an animal cannot possibly react to its environment. To increase their chances of survival, most animals have evolved acute perceptual modalities, especially eyes, to detect opportunities and dangers in their habitat. The sense organs of animals have specific capabilities and inherent limitations. For example vision is most effective within some proximal distance because, under most circumstances, spatially proximal events will have the greatest effect on an animal. Furthermore, vision is not possible through opaque objects. We must model both the capabilities and the limitations of perception correctly for our artificial animals to exhibit realistic behavior.
|Xiaoyuan Tu||January 1996|