| Direction repulsion between components in motion transparency. | |
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MedLine Citation:
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PMID: 8762721 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We measured the perceived direction of one motion component as a function of the contrast and speed of a second component for three pattern classes: plaids with two different spatial frequency components, multi-aperture patterns, and contrast-modulated (CM) patterns. The components were moving at +/- 63.4 or +/- 71.6 deg to the vertical, angles where motion transparency always occurred under our conditions. For multi-aperture and CM patterns on a single spatial scale, the components were perceived to deviate from the component motion directions by up to 20 deg at high contrasts or high speeds of the second component. However, for plaids with components on different spatial scales, the test components were perceived moving in the component directions regardless of the contrast or the speed of the second component. Our data show that this direction repulsion between components occurs within a single spatial scale but not between widely separated spatial scales. This implies that two different mechanisms are involved in motion transparency. |
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Authors:
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J Kim; H R Wilson |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Vision research Volume: 36 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 1996 Apr |
Date Detail:
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Created Date: 1996-10-25 Completed Date: 1996-10-25 Revised Date: 2007-11-14 |
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: 1177-87 Citation Subset: IM; S |
Affiliation:
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Visual Sciences Center, University of Chicago, IL 60637, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Contrast Sensitivity
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physiology* Humans Male Mathematics Models, Biological Motion Perception / physiology* Pattern Recognition, Visual / physiology Space Perception / physiology Time Factors |
| Grant Support | |
ID/Acronym/Agency:
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EY02158/EY/NEI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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