Results 11 to 20 of about 320,340 (290)

Attentional modulation of temporal contrast sensitivity in human vision. [PDF]

open access: yesPLoS ONE, 2011
Recent psychophysical studies have shown that attention can alter contrast sensitivities for temporally broadband stimuli such as flashed gratings. The present study examined the effect of attention on the contrast sensitivity for temporally narrowband ...
Isamu Motoyoshi
doaj   +1 more source

Predictors of vision impairment in Multiple Sclerosis. [PDF]

open access: yesPLoS 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

open access: yesFrontiers 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]

open access: yesNeuron, 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.
Bahl, A.   +4 more
openaire   +3 more sources

Vision Rehabilitation is Part of AMD Care

open access: yesVision, 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

Background chromatic contrast preference in cases with age-related macular degeneration

open access: yesJournal 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

The effect of serifs and stroke contrast on low vision reading

open access: yesActa Psychologica, 2023
Purpose: Patients with low vision are generally recommended to use the same fonts as individuals with normal vision. However, we are yet to fully understand whether stroke width and serifs (small ornamentations at stroke endings) can increase readability.
Katsumi Minakata   +4 more
doaj   +1 more source

Spatial Contrast Sensitivity to Polarization and Luminance in Octopus

open access: yesFrontiers 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

Psychophysical aspects of contrast sensitivity

open access: yesAfrican Vision and Eye Health, 2013
This paper reviews the psychophysical aspects of contrast sensitivity which concerns components of visual stimuli and the behavioural responses and methods used in contrast sensitivity testing.
Anusha Y. Sukha, Alan Rubin
doaj   +1 more source

A note concerning the relationship between the Adelson’s Argyle illusion and Cornsweet edges [PDF]

open access: yesPsihologija, 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

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