Centripetal force draws the eyes, not memory of the target, toward the center.
Many observers believe that a target will continue on a curved trajectory after exiting a spiral tube. Similarly, when observers were asked to localize the final position of a target moving on a circular orbit, displacement of the judged position in the direction of forward motion ("representational momentum") and toward the center of the orbit was observed (cf. T. L. Hubbard, 1996). The present study shows that memory displacement of targets on a circular orbit is affected by eye movements. Forward displacement was larger with ocular pursuit of the target, whereas inward displacement was larger with motionless eyes. The results challenge an account attributing forward and inward displacement to mental analogues of momentum and centripetal force, respectively.
Kerzel
Dirk
D
Max Planck Institute for Psychological Research, Munich, Germany. dirk.kerzel@psychol.uni-giessen.de
D005133:Eye Movements; D006801:Humans; D007600:Judgment; D008568:Memory; D009039:Motion Perception; D011582:Psychological Theory; D014796:Visual Perception