Perceptual stability--going with the flow

Historically, inflow and outflow hypotheses have been formulated as the primary explanations for perceptual stability. Central to these hypotheses is the postulation that, following an intended eye movement, knowledge of eye position cancels the consequences of the retinal image motion. Here, we reconsider the evidence for the extra-retinal signal and discuss whether this cancellation approach is compatible with the available empirical evidence. In particular, we propose that visual-oculomotor processing is a distributed process and that population-coding models of sensorimotor transformations are critical elements that need to be incorporated in any comprehensive explanation of spatial constancy.