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  Categorical learning in pigeons: The role of texture and shape in complex static stimuli

Troje, N., Huber, L., Loidolt, M., Aust, U., & Fieder, M.(1998). Categorical learning in pigeons: The role of texture and shape in complex static stimuli (59). Tübingen, Germany: Max Planck Institute for Biological Cybernetics.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-E8AB-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-8E52-2
Genre: Report

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MPIK-TR-59.pdf (Publisher version), 462KB
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Troje, NF1, 2, Author           
Huber, L, Author
Loidolt, M, Author
Aust, U, Author
Fieder, M, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: 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.

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 Dates: 1998-04
 Publication Status: Issued
 Pages: 18
 Publishing info: Tübingen, Germany : Max Planck Institute for Biological Cybernetics
 Table of Contents: -
 Rev. Type: -
 Identifiers: Report Nr.: 59
BibTex Citekey: 1527
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Title: Technical Report of the Max Planck Institute for Biological Cybernetics
Source Genre: Series
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Pages: - Volume / Issue: 59 Sequence Number: - Start / End Page: - Identifier: -