Visually guided collision avoidance is critical for the survival of many animals. The execution
of successful collision-avoidance behaviors requires accurate processing of approaching …

The superior colliculus (SC) in the mammalian mesencephalon is involved in avoidance or
escape behaviors, but little is known about the response properties of collicular neurons to …

Experiments with insects and crabs have demonstrated their remarkable capacity to learn
and memorize complex visual features (;;). Such abilities are thought to require modular …

The Decapoda is the largest order of crustaceans, some 10,000 species having been
described to date. The order includes shrimps, lobsters, crayfishes, and crabs. Most of these …

This paper describes a search for neurones sensitive to optic flow in the visual system of the
shore crab Carcinus maenas using a procedure developed from that of Krapp and …