Categorical learning in pigeons: The role of texture and shape in complex static stimuli
Author(s) / Creator(s)
Troje, Nikolaus F.
Huber, Ludwig
Loidolt, Michaela
Aust, Ulrike
Fieder, Martin
Abstract / Description
Pigeons are known to be able to categorize a wide variety of visual stimulus classes. However, it remains unclear which are the characteristics of the perceptually relevant features employed to reach such good performance. Here, we investigate the relative contributions of texture and shape information to categorization decisions about complex natural classes. We trained three groups of pigeons to discriminate between sets of photorealistic frontal images of human faces according to sex and subsequently tested them on different stimulus sets. Only the pigeons that were presented with texture information were successful at the discrimination task. Pigeons seem to possess a sophisticated texture processing system but are less capable in discriminating shapes. The results are discussed in terms of the possible evolutionary advantages of utilizing texture as a very general and potent perceptual dimension in the birds visual environment.
Keyword(s)
Taube Kategorisierung Gesicht Unterscheidung Mustererkennung Taube Kategorisierung Gesicht Unterscheidung Mustererkennung Pigeons categorization discrimination human faces sophisticated texture processing systemPersistent Identifier
Date of first publication
1998
Citation
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TR_059.pdfAdobe PDF - 472.33KBMD5: 7c91bcebee1f6d72dc28b11da35d0a7a
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Author(s) / Creator(s)Troje, Nikolaus F.
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Author(s) / Creator(s)Huber, Ludwig
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Author(s) / Creator(s)Loidolt, Michaela
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Author(s) / Creator(s)Aust, Ulrike
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Author(s) / Creator(s)Fieder, Martin
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PsychArchives acquisition timestamp2022-11-17T11:03:32Z
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Made available on2007-03-14
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Made available on2015-12-01T10:32:05Z
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Made available on2022-11-17T11:03:32Z
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Date of first publication1998
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Abstract / DescriptionPigeons are known to be able to categorize a wide variety of visual stimulus classes. However, it remains unclear which are the characteristics of the perceptually relevant features employed to reach such good performance. Here, we investigate the relative contributions of texture and shape information to categorization decisions about complex natural classes. We trained three groups of pigeons to discriminate between sets of photorealistic frontal images of human faces according to sex and subsequently tested them on different stimulus sets. Only the pigeons that were presented with texture information were successful at the discrimination task. Pigeons seem to possess a sophisticated texture processing system but are less capable in discriminating shapes. The results are discussed in terms of the possible evolutionary advantages of utilizing texture as a very general and potent perceptual dimension in the birds visual environment.en
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Persistent Identifierhttps://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bsz:291-psydok-9328
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Persistent Identifierhttps://hdl.handle.net/20.500.11780/1047
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Persistent Identifierhttps://doi.org/10.23668/psycharchives.8999
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Language of contenteng
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Keyword(s)Taubede
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Keyword(s)Kategorisierungde
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Keyword(s)Gesichtde
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Keyword(s)Unterscheidungde
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Keyword(s)Mustererkennungde
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Keyword(s)Taubede
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Keyword(s)Kategorisierungde
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Keyword(s)Gesichtde
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Keyword(s)Unterscheidungde
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Keyword(s)Mustererkennungde
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Keyword(s)Pigeonsen
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Keyword(s)categorizationen
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Keyword(s)discriminationen
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Keyword(s)human facesen
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Keyword(s)sophisticated texture processing systemen
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Dewey Decimal Classification number(s)150
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TitleCategorical learning in pigeons: The role of texture and shape in complex static stimulien
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DRO typereport
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Visible tag(s)PsyDok