Eye Tracking of Observer-Generated Target Movements

Science  12 Jul 1968:
Vol. 161, Issue 3837, pp. 187-188
DOI: 10.1126/science.161.3837.187


When an observer moves his arm he shows more precise visual tracking of a target mounted on his fingertip—the eye lags behind the target less and makes fewer corrective saccades—than when he relaxes his arm and the experimenter moves it in a similar manner. Apparently the control system for eye movements can use outflow (efferent) signals in order to anticipate motion of the self-moved target.