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  Velocity constancy in a virtual reality environment

Distler, H., Gegenfurtner, K., van Veen, H., & Hawken, M. (2000). Velocity constancy in a virtual reality environment. Perception, 29(12), 1423-1435. doi:10.1068/p3115.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E3E6-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E3E7-5
Genre: Journal Article

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Distler, H1, Author              
Gegenfurtner, KR1, Author              
van Veen, HAHC1, Author              
Hawken, MJ, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              

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 Abstract: During everyday life the brain is continuously integrating multiple perceptual cues in order to allow us to make decisions and to guide our actions. In this study we have used a simulated (virtual reality -- VR) visual environment to investigate how cues to speed judgments are integrated. There are two sources that could be used to provide signals for velocity-constancy, temporal-frequency, or distance cues. However, evidence from most psychophysical studies favour temporal-frequency cues. Here we report that two depth cues that provide a relative object - object distance, disparity, and motion parallax, can provide a significant input to velocity-constancy judgments, particularly when combined. This result indicates that the second mechanism can also play a significant role in generating velocity constancy. Furthermore, we show that cognitive factors such as familiar size can influence the perception of object speed. The results suggest that both low-level cues to spatiotemporal structure and depth, and high-level cues, such as object familiarity, are integrated by the brain during velocity estimation in real-world viewing.

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 Dates: 2000-12
 Publication Status: Published in print
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 Identifiers: URI: http://www.perceptionweb.com/abstract.cgi?id=p3115
DOI: 10.1068/p3115
BibTex Citekey: 1435
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Title: Perception
Source Genre: Journal
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Pages: - Volume / Issue: 29 (12) Sequence Number: - Start / End Page: 1423 - 1435 Identifier: -