Space, like time, is a fundamental dimension of the world in which we live. To understand and interact with the world, we must compute the positions of objects in space, both with respect to one another and with respect our bodies. Although vision clearly plays a preeminent role in these computations, there is considerable debate as to how and where such spatial information is coded in the visual system. In this paper, we will argue that, contrary to popular belief, the coding of space in the visual system is not unitary. We will present evidence which suggests instead that the visuospatial processing that underlies our conscious perception of objects and their spatial relations is quite separate from the visuospatial processing that controls our actions directed at those objects.
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