Results 21 to 30 of about 320,340 (290)
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
doaj
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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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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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
openaire +2 more sources
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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Journal of Eye Movement Research, 2017 Low vision therapy, such as magnifiers or contrast enhancement, is widely used. Scientific evidence proving its efficacy is scarce however. The objective of this study was to investigate whether the benefits of magnification and contrast enhancement ...
Michael Christen, Mathias Abegg
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Relationship between Visual Dysfunction and Retinal Changes in Patients with Multiple Sclerosis. [PDF]
PLoS ONE, 2016 To evaluate structural changes in the retina and their correlation with visual dysfunction in patients with multiple sclerosis.Patients with multiple sclerosis (n = 84) and healthy controls (n = 84) underwent structural evaluation of the retinal nerve ...
Maria Satue +10 more
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Perception of global image contrast involves transparent spatial filtering and the integration and suppression of local contrasts (not RMS contrast) [PDF]
Royal Society Open Science, 2017 When adjusting the contrast setting on a television set, we experience a perceptual change in the global image contrast. But how is that statistic computed?
Tim S. Meese +2 more
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How Much Pigment Should Flowers Have? Flowers With Moderate Pigmentation Have Highest Color Contrast
Frontiers in Ecology and Evolution, 2021 Floral pigments are a core component of flower colors, but how much pigment a flower should have to yield a strong visual signal to pollinators is unknown.
Casper J. van der Kooi
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Effect of chemotherapy on passenger mutations in metastatic colorectal cancer
Molecular Oncology, EarlyView.Changes in passenger mutation load and predicted immunotherapy response after chemotherapy treatment. Tumor cells rich with passenger mutations have increased sensitivity to chemotherapy. Correlation of passenger mutations with neoantigen load suggests highly mutated clones promote a more effective response to immunotherapy, and therefore, first‐line ...
Marium T. Siddiqui +6 more
wiley +1 more source