Interaction of perceptually monitored and unmonitored efferent commands for smooth pursuit eye movements

When observers tracked a horizontally moving spot, the path of a second spot moving at an angle to the horizontal was radically misperceived. At a signal observers abruptly switched to tracking the second spot, which was then stabilized foveally. Data concerning resulting eye movements and perceptions support a distinction between the “central” motor command, which is found to be formulated solely from the erroneous perception, and the motor...