Predictive processing, perceiving and imagining: Is to perceive to imagine, or something close to it?

This paper examines the relationship between perceiving and imagining on the basis of predictive processing models in neuroscience. Contrary to the received view in philosophy of mind, which holds that perceiving and imagining are essentially distinct, these models depict perceiving and imagining as deeply unified and overlapping. It is argued that there are two mutually exclusive implications of taking perception and imagination to be fundamentally unified. The view defended is what I dub the ecological¿enactive view given that it does not succumb to internalism about the mind-world relation, and allows one to keep a version of the received view in play.