Document Detail

Salience from feature contrast: additivity across dimensions.
MedLine Citation:
PMID:  10788635     Owner:  NLM     Status:  MEDLINE    
Test targets ('singletons') that displayed orientation, motion, luminance, or color contrast, or pairwise combinations of these, were presented in line texture arrays, and their saliences were quantified in comparison to reference targets at defined luminance levels. In general, saliency effects in different stimulus dimensions did add, but did not add linearly. That is, targets with feature contrast in two dimensions were generally more salient than targets with only one of these properties, but often less salient than predicted from the sum of the individual saliency components. Salience variations within a dimension were compared with and without a second saliency effect added. The resulting gain reduction in the combined stimulus conditions was interpreted to reflect the amount of overlap between the respective saliency mechanisms. Combinations of orientation and color contrast produced the strongest gain reduction (about 90% for color in orientation) thus indicating the strongest overlap of underlying saliency mechanisms. Combinations of orientation and motion contrast revealed about 50% overlap, slightly smaller rates were found for combinations of color and motion. All combinations with luminance contrast (orientation and luminance, motion and luminance) produced only little gain reduction (<30%) thus indicating a higher degree of independence between the underlying saliency mechanisms than for other stimulus dimensions.
H Nothdurft
Related Documents :
20166405 - Clinical performance of vital bleaching techniques.
19649055 - Color three-dimensional display with omnidirectional view based on a light-emitting dio...
1594435 - Consequences of allocating attention to locations and to other attributes.
17749815 - Hawks select odd prey.
17428755 - Evidence of proactive forefoot control during landings on inclined surfaces.
20593085 - Synthesis of novel beta-diketonate bis(bipyridyl) os(ii) dyes for utilization of infrar...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vision research     Volume:  40     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  2000  
Date Detail:
Created Date:  2000-08-04     Completed Date:  2000-08-04     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1183-201     Citation Subset:  IM    
Visual Perception Laboratory (VPL), Göttingen, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Color Perception / physiology
Contrast Sensitivity / physiology*
Motion Perception / physiology
Pattern Recognition, Visual / physiology*
Photic Stimulation / methods

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

Previous Document:  Transient kinetics of ligand binding and role of the C-terminus in the dUTPase from equine infectiou...
Next Document:  Spatial covert attention increases contrast sensitivity across the CSF: support for signal enhanceme...