Document Detail


The neural pathways mediating color shifts induced by temporally varying light.
MedLine Citation:
PMID:  19757904     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In natural viewing, an object's background often changes over time. Temporally varying backgrounds were investigated here with a steady test field within a time-varying surrounding chromaticity. With slow surround variation (below approximately 3 Hz), the color appearance of a steady test is also perceived to fluctuate. At somewhat higher temporal frequencies, however, temporal variation of the surround is visible but the test appears steady (R. L. De Valois, M. A. Webster, K. K. De Valois, & B. Lingelbach, 1986); also above approximately 3 Hz, temporal chromatic variation along the l- or s-axis of the MacLeod-Boynton space (symmetric about equal-energy-spectrum "white") shifts the steady appearance of the test field toward redness or yellowness, respectively (A. D. D'Antona & S. K. Shevell, 2006). In the study here, color shifts were measured with temporal surround modulation at 6 Hz or greater along axes intermediate to the l and s directions. Varying the relative phase of simultaneous surround variation in l and s should not change responses within independent l and s pathways but should differentially excite neural representations that combine l and s signals (so-called higher order chromatic mechanisms). Varying the phase of l and s showed that the induced color shifts were accounted for by neural responses both from nearly independent l and s pathways and from higher order chromatic mechanisms.
Authors:
Jens H Christiansen; Anthony D D'Antona; Steven K Shevell
Related Documents :
9874814 - Mechanisms of color constancy under nearly natural viewing.
8506644 - Visual mechanisms that signal the direction of color changes.
1455734 - Color perception within a chromatic context: changes in red/green equilibria caused by ...
19872984 - The color vision of dichromats : i. wavelength discrimination, brightness distribution,...
1848884 - Two light-dependent conductances in lima rhabdomeric photoreceptors.
14599574 - A role for contrast-normalisation in second-order motion perception.
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2009-05-28
Journal Detail:
Title:  Journal of vision     Volume:  9     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2009  
Date Detail:
Created Date:  2009-09-17     Completed Date:  2009-12-22     Revised Date:  2014-09-15    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  26.1-10     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adaptation, Ocular / physiology*
Adult
Color Perception / physiology*
Color Vision / physiology*
Humans
Lighting*
Visual Pathways / physiology*
Grant Support
ID/Acronym/Agency:
EY-04802/EY/NEI NIH HHS; R01 EY004802/EY/NEI NIH HHS; R01 EY004802-25/EY/NEI NIH HHS
Comments/Corrections

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


Previous Document:  A model of top-down attentional control during visual search in complex scenes.
Next Document:  Figure-ground assignment to a translating contour: a preference for advancing vs. receding motion.