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Visual memory lateralization in pigeons.

L von Fersen1, O Güntürkün

  • 1Allgemeine Psychologie, University of Konstanz, F.R.G.

Neuropsychologia
|January 1, 1990
PubMed
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Pigeon visual memory shows lateralization, with the left hemisphere (right eye) outperforming the right hemisphere (left eye) in remembering visual patterns. This suggests visual memory capacity is asymmetric in birds.

Area of Science:

  • Neuroscience
  • Comparative Psychology
  • Avian Cognition

Background:

  • Cerebral lateralization in the visual system of pigeons is established, showing left hemisphere dominance.
  • Visual memory lateralization in birds remains largely uninvestigated.

Purpose of the Study:

  • To investigate potential asymmetries in visual memory functions in pigeons.
  • To determine if visual memory exhibits lateralization similar to visual processing.

Main Methods:

  • A simultaneous instrumental discrimination procedure was employed.
  • Pigeons were trained to discriminate 100 visual patterns from 625 similar stimuli.
  • Retention tests were conducted under binocular and monocular viewing conditions.

Main Results:

Related Experiment Videos

  • Monocular retention performance was significantly higher when viewing with the right eye (left hemisphere).
  • Performance was lower when viewing with the left eye (right hemisphere).

Conclusions:

  • The findings suggest a lateralization of visual memory capacity in pigeons.
  • This asymmetry in visual memory likely contributes to the observed lateralization of the pigeon's visual system.