ABSTRACT
When an observer fixates a point in space but attends to a moving object, there is a clear perception of motion. There are two possible sources for that perception. It may be due to the selection of the low-level motion signals generated by the object or it may be derived from the signals generated by the attention system in order to track the object This second possibility is very much like the efferent copy model for the perception of target motion during pursuit eye movements. The target does not move on the retina during the tracking eye movements but it is nevertheless perceived to move in space. According to the efferent copy model, this motion percept is derived from the eye movement signals required to track the target
