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  The role of high-level motion in natural-scene perception

Vuong, Q., & Thornton, I. (2007). The role of high-level motion in natural-scene perception. Perception, 26(2): 34, 314.

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https://journals.sagepub.com/doi/10.1068/ava06 (Publisher version)
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 Creators:
Vuong, QC1, 2, Author              
Thornton, IM1, 2, 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, ou_1497794              

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 Abstract: There are large amounts of motion in scenes but only some are relevant to an observer, as these may indicate objects of interest (eg prey or predator). Here we used a visual-search paradigm to investigate the extent to which such motion plays a role in the perception of natural scenes. Observers were presented with circular arrays of 2, 4, 6, or 8 static or dynamic scenes containing either human, animal, or machine movements. In experiment 1, observers searched for human targets among machine distractors on one block and machine targets among human distractors on another block. The order of the blocks was counterbalanced. In experiment 2, we used humans and animals in the same design. In both experiments, half the observers were tested with static scenes and the other half were tested with dynamic scenes (N 12 per condition). We found that observers were faster at searching for dynamic targets than for static targets. We also found category effects on search times. For both static and dynamic conditions, observers were faster at searching for humans among machines than they were at searching for machines among humans. However, there was no difference in search times between human and animal targets for dynamic conditions but there was a difference in search times for static conditions. Overall, the present results point to the importance of high-level interpretations of motion (eg as biological versus mechanical motion) in processing natural scenes.

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 Dates: 2007-02
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1068/ava06
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Title: Eleventh Applied Vision Association Christmas Meeting 2006
Place of Event: Birmingham, UK
Start-/End Date: 2006-12-18

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 26 (2) Sequence Number: 34 Start / End Page: 314 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369