Inhibition of return to object-based and environment-based locations.

Inhibition of return (IOR) has been described in terms of two functional components. The location-based component is associated with descriptions of spatially fixed, environmental locations; the object-based component is associated with more abstract descriptions of spatially invariant objects. In the present study, we hypothesized that the location-based component may also be associated with descriptions of spatially invariant objects because, like environment-based descriptions, object-based descriptions have an intrinsic spatial structure. To test this hypothesis, we employed a computer-generated depiction of a brick that rotated in depth between the presentations of cue and target. The results of four experiments showed that IOR accrued to locations that remained fixed with respect to the brick as well as the environment, suggesting that both object-based and environment-based descriptions can influence location-based IOR.