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Gewählte Publikation:

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Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Originalarbeit

Jahr: 1999

AutorInnen: Troje, NF; Huber, L; Loidolt, M; Aust, U; Fieder, M

Titel: Categorical learning in pigeons: the role of texture and shape in complex static stimuli.

Quelle: Vision Res (39), 2 353-366.



Autor/innen der Vetmeduni Vienna:

Huber Ludwig

Diese Publikation wurde nicht im Namen der Vetmeduni Vienna erstellt und ist deshalb ausschließlich der persönlichen Publikationsliste des/der Autors/Autorin zugeordnet!


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.

Keywords Pubmed: Animals
Columbidae*
Depth Perception
Form Perception
Learning*
Pattern Recognition, Visual*


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