Perception of Apparent Motion in the Common Toad

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Science  07 Oct 1960:
Vol. 132, Issue 3432, pp. 953
DOI: 10.1126/science.132.3432.953


A simple and inexpensive apparatus makes possible the feeding of nonliving objects to the toad. The device is used to demonstrate the perception of apparent or "induced" motion. Two methods are successful: (i) toad and food moving together at a constatnt velocity in a stationary environment; (ii) toad and food stationary with the environment moving. The phenomena are similar to those found in human beings.