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A Method for Investigating Change Blindness in Pigeons Columba Livia
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Pigeons discriminate shapes based on topological features.

Arii Watanabe1, Maiko Fujimoto2, Keita Hirai3

  • 1Graduate School of Humanities, Chiba University, 1-33, Yayoicho, Inage Ward, Chiba-shi, Chiba 263-8522, Japan.

Vision Research
|March 5, 2019
PubMed
Summary

Pigeons, with local-cue precedence, can perceive topological features like holes in shapes. This suggests topological perception is a primitive visual system component, not limited to species with global-cue precedence.

Keywords:
PigeonsTopologyVisual discrimination

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Area of Science:

  • Comparative Psychology
  • Animal Cognition
  • Visual Perception

Background:

  • Topological feature use in visual recognition was previously shown only in species with global-cue precedence.
  • Pigeons exhibit local-cue precedence, raising questions about their ability to use topological cues.

Purpose of the Study:

  • To investigate whether pigeons utilize topological features for shape discrimination.
  • To determine if topological perception is exclusive to species with global-cue precedence.

Main Methods:

  • Pigeons were divided into two groups: topology and pseudocategory.
  • The topology group discriminated shapes based on the presence or absence of holes.
  • The pseudocategory group discriminated shapes based on arbitrary categories.

Main Results:

  • The topology group demonstrated rapid improvement in shape discrimination.
  • The pseudocategory group showed minimal improvement, suggesting learning beyond rote memorization.
  • Data indicate shape discrimination in pigeons relies on on-off feature information.

Conclusions:

  • Pigeons, despite local-cue precedence, can perceive topological features.
  • Topological perception may be a fundamental, primitive aspect of the visual system across various species.