| Cooperative interactions and the perception of motion and stationarity for directionally ambiguous apparent-motion stimuli. | |
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MedLine Citation:
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PMID: 8938003 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Evidence is reported that stationarity rather than motion can be perceived for displaced stimuli, not because of insufficient motion energy for the stimulus to activate individual motion detectors, but because of cooperative interactions that actively suppress the perception of motion. A long row of evenly spaced dots was presented in counterphase; the dots presented during each 180 ms frame were located midway between the dots presented during the previous frame. When either a blank interval as brief as 15 ms was inserted between successive frames or the luminance polarity of the dots was reversed on successive frames, the unidirectional motion pattern perceived for small interdot distances (small displacements) was replaced by the perception of stationarity. However, when under the same conditions a single dot was displaced over the same small distances, motion rather than stationarity was perceived. The contrasting results for the long row of displaced dots and the single displaced dot indicated that when the activation of motion detectors is weakened (by nonzero interframe intervals and/or the reversal of luminance polarity), the perception of motion can be actively suppressed by the collective effects of inhibitory interactions among the large ensemble of detectors that is activated by the long row of dots. |
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Authors:
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H S Hock; G W Balz; K E Eastman |
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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: Perception Volume: 25 ISSN: 0301-0066 ISO Abbreviation: Perception Publication Date: 1996 |
Date Detail:
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Created Date: 1997-03-28 Completed Date: 1997-03-28 Revised Date: 2008-11-21 |
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: 887-900 Citation Subset: IM; S |
Affiliation:
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Department of Psychology, Florida Atlantic University, Boca Raton 33431, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Field Dependence-Independence Humans Lighting Models, Neurological Motion Perception / physiology* Perceptual Masking / physiology* Photoreceptor Cells / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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