| Dynamics of visual masking revealed by second-order metacontrast. | |
| | |
MedLine Citation:
|
PMID: 21493705 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Metacontrast is a powerful visual illusion by which the visibility of a brief stimulus is drastically reduced when it is followed by a snugly fitting second, masking stimulus. There have been longstanding debates about the levels at which metacontrast mechanisms operate and about the temporal unfolding of the masking effect. Here, we use second-order features (texture and movement) in order to set a lower bound to the level at which metacontrast may be found. First, we show that interactions of two second-order stimuli readily produce typical metacontrast masking. We then create second-order single-transient stimuli that induce visual percepts when a random uniform texture is locally replaced by a similar random uniform texture. We show that these ultra-brief stimuli can be used both as target and mask. Using these single-transient stimuli, we seek to disentangle the relative contributions of mask onset and offset. Results suggest that, at least in the context of second-order masking, nearly all of the mask's effectiveness is due to the very first visual event that follows the target. |
| | |
Authors:
|
Jérôme Sackur |
Related Documents
:
|
9187865 - Evaluation of diaphragm electromyogram contamination during progressive inspiratory man... 19605315 - Non-invasive wet electrocochleography. 17850195 - Basal ganglia local field potentials: applications in the development of new deep brain... 1205275 - Large bowel myoelectrical activity in man. 19633555 - Tip links in hair cells: molecular composition and role in hearing loss. 7607985 - Rate-intensity-functions of pigeon auditory primary afferents. |
Publication Detail:
|
Type: Journal Article Date: 2011-04-14 |
Journal Detail:
|
Title: Journal of vision Volume: 11 ISSN: 1534-7362 ISO Abbreviation: J Vis Publication Date: 2011 |
Date Detail:
|
Created Date: 2011-04-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101147197 Medline TA: J Vis Country: United States |
Other Details:
|
Languages: eng Pagination: - Citation Subset: IM |
Affiliation:
|
Laboratoire de Sciences Cognitives et Psycholinguistique, EHESS/CNRS/DEC-ENS, Département d'Études Cognitives, École Normale Supérieure, Paris, France. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Molecular mechanisms of activation of endothelial nitric oxide synthase mediated by transient recept...
Next Document: Influence of optic-flow information beyond the velocity field on the active control of heading.