Results 11 to 20 of about 302,396 (290)
Facilitation of contrast detection in near-peripheral vision
Vision Research, 2004 Foveal detection of a Gabor patch (target) is facilitated by collinear, displaced high-contrast flankers. Polat and Sagi reported that the same phenomenon occurred in the periphery, but no data were presented [Proc. Natl. Acad. Sci. 91 (1994) 1206]. Others have found no facilitation in a limited number of conditions tested.
Robert G. Giorgi +3 more
openalex +4 more sources
Contrast conservation in human vision [PDF]
Vision Research, 2003 Visual experience, which is defined by brief saccadic sampling of complex scenes at high contrast, has typically been studied with static gratings at threshold contrast. To investigate how suprathreshold visual processing is related to threshold vision, we tested the temporal integration of contrast in the presence of large, sudden changes in the ...
Peter J. Bex +2 more
openaire +2 more sources
Predictors of vision impairment in Multiple Sclerosis. [PDF]
PLoS ONE, 2018 Visual impairment significantly alters the quality of life of people with Multiple Sclerosis (MS). The objective of this study was to identify predictors (independent variables) of visual outcomes, and to define their relationship with neurological ...
Bernardo Sanchez-Dalmau +15 more
doaj +1 more source
Simulating Visibility and Reading Performance in Low Vision
Frontiers in Neuroscience, 2021 PurposeLow vision reduces text visibility and causes difficulties in reading. A valid low-vision simulation could be used to evaluate the accessibility of digital text for readers with low vision.
Ying-Zi Xiong +4 more
doaj +1 more source
Neural Mechanisms for Drosophila Contrast Vision [PDF]
Neuron, 2015 Spatial contrast, the difference in adjacent luminance values, provides information about objects, textures, and motion and supports diverse visual behaviors. Contrast computation is therefore an essential element of visual processing. The underlying mechanisms, however, are poorly understood.
Etienne Serbe +4 more
openaire +3 more sources
Vision Rehabilitation is Part of AMD Care
Vision, 2018 AMD does not just affect the retina. It severely affects people’s lives. Paying attention to this aspect will only become more important as the population ages and more otherwise healthy individuals become affected.
August Colenbrander
doaj +1 more source
Binocular contrast vision at and above threshold [PDF]
Journal of Vision, 2006 A fundamental problem for any visual system with binocular overlap is the combination of information from the two eyes. Electrophysiology shows that binocular integration of luminance contrast occurs early in visual cortex, but a specific systems architecture has not been established for human vision.
Meese, Tim S. +2 more
openaire +5 more sources
Background chromatic contrast preference in cases with age-related macular degeneration
Journal of Optometry, 2013 Objective: To identify background chromatic contrast preferred subjectively by patients with age-related macular degeneration (AMD). Methods: Prospective observational case series. Study subjects with AMD were recruited and compared to a control group of
Mahmoud Alizadeh-Ebadi +2 more
doaj +1 more source
Spatial Contrast Sensitivity to Polarization and Luminance in Octopus
Frontiers in Physiology, 2020 While color vision is achieved by comparison of signals of photoreceptors tuned to different parts of light spectra, polarization vision is achieved by comparison of signals of photoreceptors tuned to different orientations of the electric field ...
Luis Nahmad-Rohen, Misha Vorobyev
doaj +1 more source
A note concerning the relationship between the Adelson’s Argyle illusion and Cornsweet edges [PDF]
Psihologija, 2014 Adelson’s Argyle illusion and the Craik-O’Brien-Cornsweet illusion are two noteworthy brightness illusions. In the Argyle illusion two identical gray areas are perceived to have radically different brightness levels when they are surrounded by a
Flynn Oliver, Shapiro Arthur G.
doaj +1 more source