Document Detail


Measuring the amplification of attention.
MedLine Citation:
PMID:  10500237     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
An ambiguous motion paradigm, in which the direction of apparent motion is determined by salience (i.e., the extent to which an area is perceived as figure versus ground), is used to assay the amplification of color by attention to color. In the red-green colored gratings used in these experiments, without attention instructions, salience depends on the chromaticity difference between colored stripes embedded in the motion sequence and the yellow background. Selective attention to red (or to green) alters the perceived direction of motion and is found to be equivalent to increasing the physical redness (or greenness) by 25-117%, depending on the observer and color. Whereas attention to a color drastically alters the salience of that color, it leaves color appearance unchanged. A computational model, which embodies separate, parallel pathways for object perception and for salience, accounts for 99% of the variance of the experimental data.
Authors:
E Blaser; G Sperling; Z L Lu
Related Documents :
20197997 - Color of the ocean.
16446147 - A motion-dependent distortion of retinotopy in area v4.
15341157 - Evolution of color variation in dragon lizards: quantitative tests of the role of cryps...
20923467 - Better understanding of digital photography for skin color measurement: with a special ...
6531287 - A preliminary study on the in vivo transmission of light through psoriatic plaques.
7626547 - The role of pattern outline in bilateral symmetry detection with briefly flashed dot pa...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Proceedings of the National Academy of Sciences of the United States of America     Volume:  96     ISSN:  0027-8424     ISO Abbreviation:  Proc. Natl. Acad. Sci. U.S.A.     Publication Date:  1999 Sep 
Date Detail:
Created Date:  1999-10-21     Completed Date:  1999-10-21     Revised Date:  2013-04-16    
Medline Journal Info:
Nlm Unique ID:  7505876     Medline TA:  Proc Natl Acad Sci U S A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  11681-6     Citation Subset:  IM    
Affiliation:
Department of Cognitive Sciences, University of California, Irvine, CA 92697, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Attention*
Color
Humans
Models, Psychological
Comments/Corrections

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


Previous Document:  Antisense-mediated silencing of a gene encoding a major ryegrass pollen allergen.
Next Document:  Structure and activity of the murine type 5 17beta-hydroxysteroid dehydrogenase gene(1).