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The spatial distribution of pigeons' target detection

D M Wilkie1, L M Saksida

  • 1Department of Psychology, University of British Columbia, Vancouver, Canada.

Behavioural Brain Research
|February 28, 1994
PubMed
Summary

Pigeons

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Area of Science:

  • Comparative psychology and avian visual perception.

Background:

  • Understanding the visual processing capabilities of non-human animals provides insights into the evolution of vision.
  • Pigeons (Columba livia) are widely used models for studying visual attention and perception.

Purpose of the Study:

  • To investigate the spatial distribution of visual target detection in pigeons.
  • To determine if pigeons exhibit uniform or non-uniform detection abilities across their visual field.

Main Methods:

  • Pigeons were trained to discriminate briefly-presented visual targets on a computer display.
  • A touchscreen recorded peck responses, with correct detections yielding a reward.
  • A behavioral fixation procedure ensured pigeons faced the display during target presentation.

Main Results:

  • Target detection probability was highest at the central fixation point.
  • Detection accuracy decreased with increasing target eccentricity (horizontal and vertical).
  • This demonstrates a non-uniform distribution of visual sensitivity in pigeons.

Conclusions:

  • Pigeon visual perception is not uniform across the frontal plane.
  • The findings suggest specialized processing in the central visual field for target detection.

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