Independence and Integration of Perception and Action

The remarkable complexity and sophistication of our perceptual systems have evolved for ultimately one purpose - to promote efficient and effective action within a constantly changing environment. Traditionally, the route from perception to action has often been viewed as a single, one-directional sequence of stages, which begins with a stimulus presentation and ends with a response. This view has tended to emphasize the separation of perception from action, with the result that studies of stimulus and response processing have often been carried out in isolation from each other. The work in this issue takes a different approach, which reflects renewed and increasing interest in how cognitive systems for vision and action are integrated. The studies here explore multiple pathways between vision and action, the ways in which vision promotes action, and even the conditions and degree to which action and its consequences can influence vision. A variety of methods and theoretical approaches are represented, in studies examining spatial coding, object processing, motor behaviour, attentional bias, and codes for action.