| Temporal and spatial integration in dynamic random-dot stimuli. | |
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MedLine Citation:
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PMID: 1288010 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Random-dot cinematograms comprising many different, spatially intermingled local motion vectors can produce a percept of global coherent motion in a single direction. Thresholds for discriminating the direction of global motion were measured under various conditions. Discrimination thresholds increased with the width of the distribution of directions in the cinematogram. Thresholds decreased as the duration of area of the cinematogram increased. Temporal integration for global direction discrimination extends over about 465 msec (9.3 frames) while the spatial integration limit is at least as large as 63 deg2 (circular aperture diameter = 9 deg). The large spatial integration area is consistent with the physiology of higher visual areas such as MT and MST. |
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Authors:
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S N Watamaniuk; R Sekuler |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Vision research Volume: 32 ISSN: 0042-6989 ISO Abbreviation: Vision Res. Publication Date: 1992 Dec |
Date Detail:
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Created Date: 1993-03-15 Completed Date: 1993-03-15 Revised Date: 2006-11-15 |
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: 2341-7 Citation Subset: IM; S |
Affiliation:
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Department of Psychology, Northwestern University, Evanston, IL 60208. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Discrimination (Psychology)
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physiology Humans Male Motion Perception / physiology* Pattern Recognition, Visual / physiology* Sensory Thresholds / physiology Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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