It seems to smooth the images:-http://www.washingtonpost.com/national/health-science/what-youre-seeing-right-now-is-a-composite-of-images-past-and-present-researchers-find/2014/04/05/accc2f38-bc32-11e3-96ae-f2c36d2b1245_story.html?wpisrc=nl_headlines-"We're not very good at detecting changes in our environment if the object is something we wouldn't expect to change," Johnson said. In the real world, we wouldn't think a person we're talking to would spontaneously transform. Thus, our brains often don't waste energy trying to notice these types of shifts.-"Fischer suspects that our brains learn that the world follows certain rules — objects don't change location spontaneously, and little changes don't matter most of the time — and adaptation of the visual system follows suit.-"Visual scientist Michele Rucci of Boston University, who was not involved in the study, was surprised and intrigued by the existence of continuity fields.-"We have this input to our retina that is continuously jumping, but yet the world seems stable," Rucci said. He noted that, even when we fix our gaze on something, our eyes are actually shifting microscopically several times per second. "Our perception of the world is very different than what the real input to the retina is.'"