The stream/bounce effect occurs for luminance- and disparity-defined motion targets

Grove, Philip M., Kawachi, Yousuke and Sakurai, Kenzo (2012) The stream/bounce effect occurs for luminance- and disparity-defined motion targets. Perception, 41 4: 379-388. doi:10.1068/p6808

Author Grove, Philip M.
Kawachi, Yousuke
Sakurai, Kenzo
Title The stream/bounce effect occurs for luminance- and disparity-defined motion targets
Journal name Perception   Check publisher's open access policy
ISSN 0301-0066
Publication date 2012-01-01
Sub-type Article (original research)
DOI 10.1068/p6808
Open Access Status Not Open Access
Volume 41
Issue 4
Start page 379
End page 388
Total pages 10
Place of publication London, United Kingdom
Publisher Sage Publications
Language eng
Abstract We generalised the stream/bounce effect to dynamic random element displays containing luminance- or disparity-defined targets. Previous studies investigating audio-visual interactions in this context have exclusively employed motion sequences with luminance-defined disks or squares and have focused on properties of the accompanying brief stimuli rather than the visual properties of the motion targets. We found that the presence of a brief sound temporally close to coincidence, or a visual flash at coincidence significantly promote bounce perception for motion targets defined by either luminance contrast or disparity contrast. A brief tone significantly promoted bouncing of luminance-defined targets above a no-sound baseline when it was presented at least 250 ms before coincidence and 100 ms after coincidence. A similar pattern was observed for disparity-defined targets, though the tone promoted bouncing above the no-sound baseline when presented at least 350 ms before and 300 ms after coincidence. We further explored the temporal properties of audio-visual interactions for these two display types and found that bounce perception saturated at similar durations after coincidence. The stream/bounce illusion manifests itself in dynamic random-element displays and is similar for luminance- and disparity-defined motion targets.
Keyword Cross-modal integration
Cyclopean motion perception
Stream/bounce effect
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Psychology Publications
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