Categorical Perception of Familiar Objects

Newell, FN; Bülthoff, HH

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Categorical Perception of Familiar Objects

Newell, F., & Bülthoff, H.(2000). Categorical Perception of Familiar Objects (79). Tübingen, Germany: Max Planck Institute for Biological Cybernetics.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E51D-C Version Permalink: http://hdl.handle.net/21.11116/0000-0002-8DFF-1

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MPIK-TR-79.pdf (Publisher version), 1009KB

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Newell, FN^{1, 2}, Author
Bülthoff, HH^{1, 2}, Author

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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: We investigated whether familiar, 3-D objects are categorically perceived in the same way that other visual stimuli (e.g., colour and faces) are perceived as categorical. A continuum of shape change between fifteen pairs of objects was created and the images along the continuum were used as stimuli. In Experiment 1 participants were first required to discriminate pairs of images of objects that lay along the shape continuum. Then participants were asked to classify each morph-image into one of two pre-specified shapes. We found evidence for categorical perception in some but not all of our object pairs. In Experiment 2 we lloked in more detail at specific object pairs by increasing the difficulty of the discrimination task and found that more object pairs were categorically perceived. In Experiment 3 similarity ratings for each object pair were collected. These similarity scores correlated with the degree of perceptual categorisation found for the object pairs. Our findings suggest that familiar objects are perceived categorically and that categorical perception is closely tied to inter-object perceptual similarity.

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Dates: Published in Print: 2000-03

Publication Status: Published in print

Pages: 19

Publishing info: Tübingen, Germany : Max Planck Institute for Biological Cybernetics

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Identifiers: Report Nr.: 79
BibTex Citekey: 1544

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Title: Technical Report of the Max Planck Institute for Biological Cybernetics

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Pages: - Volume / Issue: 79 Sequence Number: - Start / End Page: - Identifier: -