Some of the central problems to be solved by the brain, such as figure-ground coding and object recognition, concern the binding of separately coded feature elements into coherent object representations. The binding problem has recently been approached by a variety of disciplines, notably psychophysics, and experimental psychology, electrophysiology, neurophysiology and computational modelling. This special issue brings together a collection of papers principally from psychology and computational modelling. These papers address issues in Gestalt formation, the relation of grouping and binding...