| The interaction between stereoscopic and luminance motion. | |
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MedLine Citation:
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PMID: 9373687 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An interaction in apparent motion between perceived three-dimensional forms defined by stereopsis and local luminous elements is reported. Vertical stripes of cyclopean square gratings were simulated by random-dot stereograms. Alternation of two-frame stereograms whose phases differed by 90 deg caused two kinds of percepts, planes' motion in depth (first-order stereoscopic motion, first-order SM) or lateral motion of gratings (higher-order stereoscopic motion, higher-order SM). Experiment 1 explored the conditions under which higher-order SM frequently arose, as opposed to local luminance-based in-depth motion (first-order SM). The results show that, when the spatial arrangements of two-frame random dots were correlated, higher-order SM dominated for long ISI conditions (ISI > 73 msec). When they were uncorrelated, higher-order SM dominated even under zero ISI conditions. Subjects reported that, when higher-order SM was seen, dots were attached to the surfaces of the moving cyclopean figure (motion capture). Experiment 2 tested which factor caused the domination of higher-order SM under uncorrelated conditions in Experiment 1, the larger distance of dot jump or the varied directions of the dots' motion. The results show that, when the distance of dot jump is large or when the directions of dots' motion are incoherent, higher-order SM arises more frequently. When local first-order motion signals are weakened by appropriate temporal and spatial conditions or by incoherent motion directions, higher-order SM dominates and it captures the motion of dots. |
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Authors:
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H Ito |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Vision research Volume: 37 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 1997 Sep |
Date Detail:
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Created Date: 1997-12-08 Completed Date: 1997-12-08 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0417402 Medline TA: Vision Res Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 2553-9 Citation Subset: IM; S |
Affiliation:
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Department of Visual Communication Design, Faculty of Design, Kyushu Institute of Design, Fukuokashi, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Depth Perception
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physiology* Humans Light Motion Perception / physiology* Pattern Recognition, Visual / physiology Psychophysics Time Factors Vision Disparity Vision, Binocular |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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