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Object discrimination in pigeons: effects of local and global cues
Journal article   Open access   Peer reviewed

Object discrimination in pigeons: effects of local and global cues

Olga F Lazareva, Shaun P Vecera and Edward A Wasserman
Vision research (Oxford), Vol.46(8-9), pp.1361-1374
04/2006
DOI: 10.1016/j.visres.2005.11.006
PMID: 16364395
url
https://doi.org/10.1016/j.visres.2005.11.006View
Published (Version of record) Open Access

Abstract

We trained two pigeons to report whether a pair of differently colored 2-D objects had two target dots on either one or both of the objects. Follow-up tests disclosed that the colored regions surrounding the task-relevant targets were necessary, but not sufficient to support the birds' discrimination. Moreover, when local and global color cues provided contradictory information, pigeons failed to discriminate the stimuli, suggesting that the birds attended to both local and global information. Finally, one bird learned the object discrimination in the absence of differential color cues suggesting that, with suitable training, pigeon can attend to entire objects.
Cues Animals Form Perception - physiology Discrimination (Psychology) Psychophysics Color Perception Columbidae - physiology

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