Document Detail


Color fusion and flicker fusion frequencies using tritanopic pairs.
MedLine Citation:
PMID:  1455715     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We determined color fusion and flicker fusion frequencies for tritanopic color pairs, so that only short wavelength sensitive cones were modulated. The minimally distinct border (MDB) technique was used to determine tritanopic pairs for each observer. If S-cones do not contribute to the luminance channel, color fusion and flicker fusion frequencies should be equal, because the achromatic flicker perceived beyond color fusion frequency is supposed to be elicited just by the luminance channel. The results show a significant difference between color fusion and flicker fusion frequencies for all pairs and for all subjects, which suggests a contribution of S-cones to the luminance channel. However, the results also showed that the residual achromatic flicker can not be eliminated by adjusting relative luminance of two colors flickering in counter-phase. The relative luminance stayed the same as the MDB setting when residual flicker was minimized. This means that minimum flicker was obtained when L- and M-cones are temporally silenced, and suggests little or no contribution of S-cones to luminance channel. These conflicting results might be explained by phase shift between responses of S-cones and other longer-wavelength-sensitive cones.
Authors:
Y Nakano; P K Kaiser
Related Documents :
1818565 - Rapid charge movements and photosensitivity of visual pigments in salamander rods and c...
23711505 - Feasibility study on the spatial and temporal movement of samburu's cattle and wildlife...
16961975 - Convergence of experimental multiple rayleigh matches to peak l- and m-photopigment sen...
11949805 - An animal model for studying cone function in retinal detachment.
19111905 - Rod-cone dystrophy with maculopathy in genetic glutathione synthetase deficiency: a mor...
18345845 - The mid-difference hump in forward-masked intensity discrimination.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Aug 
Date Detail:
Created Date:  1993-01-06     Completed Date:  1993-01-06     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1417-23     Citation Subset:  IM    
Affiliation:
Department of Psychology, York University, North York, Ontario, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Color Perception / physiology*
Flicker Fusion / physiology*
Humans
Male
Middle Aged
Photoreceptor Cells / physiology
Spectrophotometry

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


Previous Document:  On the relation between ERG waves and retinal function: inverted rod photoresponses from the frog re...
Next Document:  The Bezold-Brücke effect in the color vision system of the honeybee.