Results 21 to 30 of about 1,633,491 (322)
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
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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
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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.
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Psychophysical aspects of contrast sensitivity
African 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
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Clinical Ophthalmology, 2022 Marcus Werner Storch,1 Greta Zinser,1 Peer Lauermann,1 Mohammed Haitham Khattab,1 Anna Nguyen-Höhl,1 Dirk Raddatz,2 Katja Gollisch,2 Josep Callizo,1 Hans Hoerauf,1 Nicolas Feltgen1 1Department of Ophthalmology, University of Göttingen, Göttingen ...
Storch MW +9 more
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Psicologia: Reflexão e Crítica, 2016 The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period.
Éllen Dias Nicácio da Cruz +4 more
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Contrast conservation in human vision
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 ...
Fiser, József +2 more
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Achromatic Cues Are Important for Flower Visibility to Hawkmoths and Other Insects
Frontiers in Ecology and Evolution, 2022 Studies on animal colour vision typically focus on the chromatic aspect of colour, which is related to the spectral distribution, and disregard the achromatic aspect, which is related to the intensity (“brightness”) of a stimulus.
Casper J. van der Kooi, Almut Kelber
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Crowdsourcing visual perception experiments: a case of contrast threshold [PDF]
PeerJ, 2019 Crowdsourcing has commonly been used for psychological research but not for studies on sensory perception. A reason is that in online experiments, one cannot ensure that the rigorous settings required for the experimental environment are replicated.
Kyoshiro Sasaki, Yuki Yamada
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Dampening Spontaneous Activity Improves the Light Sensitivity and Spatial Acuity of Optogenetic Retinal Prosthetic Responses [PDF]
, 2016 Retinitis pigmentosa is a progressive retinal dystrophy that causes irreversible visual impairment and blindness. Retinal prostheses currently represent the only clinically available vision-restoring treatment, but the quality of vision returned remains ...
Barrett, John Martin +2 more
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