Discrimination of geons by pigeons: The effects of variations in surface depiction

  title={Discrimination of geons by pigeons: The effects of variations in surface depiction},
  author={Michael E. Young and Jessie J. Peissig and Edward A. Wasserman and Irving Biederman},
  journal={Animal Learning \& Behavior},
We explored how changes in the depiction of the surface features of a simple volume (a geon) affected the pigeon’s recognition performance. Pigeons were trained to make a different keypeck response to each of four computer-rendered single-geon objects. In Experiment 1, the pigeons were tested with images of the original stimuli in which the light source was shifted from its original position, as well as with silhouettes and line drawings of these objects. All three types of stimulus variations… Expand

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