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Kimberly Kirkpatrick1, Tannis Bilton1, Bruce C Hansen2

  • 1Department of Psychological Sciences, Kansas State University.

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Pigeons, like humans, can rapidly categorize scenes, but require longer viewing times. This study reveals scene categorization is a shared ability across species, influenced by environmental adaptations.

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Area of Science:

  • Comparative Cognition
  • Visual Perception
  • Animal Behavior

Background:

  • Human scene gist categorization is rapid and accurate, leveraging visual statistical regularities.
  • It remains unknown if this ability is universal or shaped by species-specific adaptations.
  • Pigeon research on rapid scene categorization is limited.

Purpose of the Study:

  • To investigate if pigeons exhibit rapid scene categorization abilities.
  • To determine if pigeons utilize complex statistical regularities in scene categorization.
  • To explore cross-species similarities and differences in scene categorization, considering adaptive specializations.

Main Methods:

  • Experiment 1: Pigeons trained to discriminate between basic (beach vs. mountain) and superordinate (natural vs. manmade) scene categories with varying stimulus durations.
  • Experiment 2: Pigeons trained on natural scene categories across multiple viewpoints (zenith, bird's eye, terrestrial) to assess reliance on statistical regularities.

Main Results:

  • Pigeons successfully learned and generalized scene categorization tasks, demonstrating rapid categorization within 0.2-0.35 seconds.
  • Pigeon categorization performance correlated with scene category-specific statistical regularities, similar to humans.
  • Pigeons required longer stimulus durations than humans for rapid scene categorization.

Conclusions:

  • Rapid scene categorization is a shared cognitive process between pigeons and humans.
  • This ability is influenced by species-specific adaptive specializations related to environmental statistical regularities.
  • Pigeons' visual system processes complex scene statistics, contributing to categorization.