| The aperture problems in the Pulfrich effect. | |
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MedLine Citation:
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PMID: 12729385 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Pulfrich effect yields a perceived depth for horizontally moving objects but not for vertically moving ones. In this study the Pulfrich effect was measured by translating oblique lines seen through a circular window, which made motion direction ambiguous. Overlaying random dots that moved horizontally, vertically, or diagonally controlled the perceptual motion direction of the lines. In experiment 1, when the lines were seen to move horizontally, the effect was strongest in spite of the same physical motion of the lines. Experiment 2 was performed to test the above conditions again, excluding the Pulfrich effect of the dots on the depth of the lines. The overlaid dots were presented to one eye only. The result showed that the Pulfrich effect of the lines was persistently strong in spite of the perceptual changes in motion direction. Experiment 3 also showed that the Pulfrich depth was independent of the perceived horizontal speed in a plaid display. The Pulfrich effect was determined by measuring the horizontal disparity component, independently of the perceived motion direction. These results demonstrate that the aperture problems in motion and stereopsis in the Pulfrich effect are solved independently. |
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Authors:
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Hiroyuki Ito |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Perception Volume: 32 ISSN: 0301-0066 ISO Abbreviation: Perception Publication Date: 2003 |
Date Detail:
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Created Date: 2003-05-05 Completed Date: 2003-06-03 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372307 Medline TA: Perception Country: England |
Other Details:
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Languages: eng Pagination: 367-75 Citation Subset: IM |
Affiliation:
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Department of Visual Communication Design, Kyushu Institute of Design, 4-9-1, Shiobaru, Minami-ku, Fukuoka-shi, 815-8540 Japan. ito@kyushu-id.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Depth Perception
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physiology* Humans Motion Perception / physiology* Optical Illusions / physiology* Photic Stimulation |
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