Document Detail


Temporal integration of spatially filtered visual images.
MedLine Citation:
PMID:  1513664     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Factors which govern the temporal integration of spatial information were examined in a group of five experiments. A series of high-pass and low-pass spatially filtered versions of a visual scene were generated. Observers' ratings of these filtered versions of the scene for perceived image quality indicated that quality was determined both by the bandwidth of spatial information and the presence of high-spatial-frequency edge information. When sequences of three different versions of the scene were presented over an interval of 120 ms the perceived quality of the resulting composite image was determined both from the ratings of the individual components of that sequence and from the order in which these components were presented. When the order of spatial information in a sequence moved from coarse to fine detail the perceived quality of the composite image was significantly better than when the order moved from fine to coarse. This evidence of a coarse-to-fine bias in pattern integration was further investigated with a detection paradigm. The pattern of errors once again indicated that temporal integration of spatial information was superior when a coarse-to-fine mode of information delivery was employed. Taken together the data indicate that the pattern-integration mechanism has an inherent order bias and does not accumulate spatial information so efficiently when the 'natural' coarse-to-fine order is violated.
Authors:
D M Parker; J R Lishman; J Hughes
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perception     Volume:  21     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  1992  
Date Detail:
Created Date:  1992-10-01     Completed Date:  1992-10-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  147-60     Citation Subset:  IM    
Affiliation:
Department of Psychology, Kings College, University of Aberdeen, Scotland.
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MeSH Terms
Descriptor/Qualifier:
Attention*
Discrimination Learning
Humans
Pattern Recognition, Visual*
Perceptual Masking*
Psychophysics
Reaction Time
Space Perception*
Time Perception*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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