Matches in SemOpenAlex for { <https://semopenalex.org/work/W2052493313> ?p ?o ?g. }
Showing items 1 to 86 of
86
with 100 items per page.
- W2052493313 abstract "Sinusoidal gratings of equal spatial frequency but different orientation require different levels of contrast to be detected by the human visual system. This phenomenon defined as oblique effect has a neuronal origin. The purpose of this work was to determine the neuronal magnitude of this effect, by isolating it from the optics of the eye. A visual interferometer was assembled to generate and project on the retina an interference pattern consisting of sinusoidal gratings with variable orientation (0º to 165º, 15º step). Adding background light to the interference pattern of 12 cycles/degree (cpd), different contrast levels were generated while the retinal illuminance was kept unaltered. A 2º circular stimulus was presented (during 500 ms) on the fovea producing a retinal illuminance of 134 Td (trolands). The contrast sensitivity threshold of four observers (ages 23, 33, 33, 52 years old) was determined using a Yes-No psychophysical method, and the 50% odds of correct response determined by a Weibull cumulative function. The four observers showed different contrast sensitivity thresholds dependent on the grating orientation. Oblique gratings (≈45º/≈135º) required more contrast to be detected than horizontal and vertical gratings. The maximum differences in contrast sensitivity between orientations ranged from 0.15 to 0.31 log units. The mean contrast threshold across all orientations was then calculated to investigate the effect of age on the contrast sensitivity. It was found a 0.046 log units decrease per decade (r=0.94). Oblique effect is an evident neuronal phenomenon with considerable inter-subject variability, making grating orientation important information in contrast sensitivity evaluation." @default.
- W2052493313 created "2016-06-24" @default.
- W2052493313 creator A5072225192 @default.
- W2052493313 creator A5074260376 @default.
- W2052493313 creator A5074839642 @default.
- W2052493313 creator A5079689666 @default.
- W2052493313 date "2014-08-22" @default.
- W2052493313 modified "2023-09-23" @default.
- W2052493313 title "Revisiting grating orientation effects on visual contrast sensitivity using optical interferometry" @default.
- W2052493313 cites W1963564756 @default.
- W2052493313 cites W1974316649 @default.
- W2052493313 cites W1991535090 @default.
- W2052493313 cites W1998896459 @default.
- W2052493313 cites W2017776890 @default.
- W2052493313 cites W2020391188 @default.
- W2052493313 cites W2024934745 @default.
- W2052493313 cites W2027937218 @default.
- W2052493313 cites W2040573238 @default.
- W2052493313 cites W2053570064 @default.
- W2052493313 cites W2058456199 @default.
- W2052493313 cites W2069537256 @default.
- W2052493313 cites W2077039279 @default.
- W2052493313 cites W2085892436 @default.
- W2052493313 cites W2153782322 @default.
- W2052493313 cites W2171993448 @default.
- W2052493313 cites W4241683304 @default.
- W2052493313 cites W4247392117 @default.
- W2052493313 doi "https://doi.org/10.1117/12.2063728" @default.
- W2052493313 hasPublicationYear "2014" @default.
- W2052493313 type Work @default.
- W2052493313 sameAs 2052493313 @default.
- W2052493313 citedByCount "0" @default.
- W2052493313 crossrefType "proceedings-article" @default.
- W2052493313 hasAuthorship W2052493313A5072225192 @default.
- W2052493313 hasAuthorship W2052493313A5074260376 @default.
- W2052493313 hasAuthorship W2052493313A5074839642 @default.
- W2052493313 hasAuthorship W2052493313A5079689666 @default.
- W2052493313 hasConcept C100921725 @default.
- W2052493313 hasConcept C120665830 @default.
- W2052493313 hasConcept C121332964 @default.
- W2052493313 hasConcept C138885662 @default.
- W2052493313 hasConcept C15744967 @default.
- W2052493313 hasConcept C160697094 @default.
- W2052493313 hasConcept C16345878 @default.
- W2052493313 hasConcept C192562407 @default.
- W2052493313 hasConcept C2524010 @default.
- W2052493313 hasConcept C2776502983 @default.
- W2052493313 hasConcept C2777813233 @default.
- W2052493313 hasConcept C2779918689 @default.
- W2052493313 hasConcept C33923547 @default.
- W2052493313 hasConcept C36365805 @default.
- W2052493313 hasConcept C41895202 @default.
- W2052493313 hasConcept C542102704 @default.
- W2052493313 hasConceptScore W2052493313C100921725 @default.
- W2052493313 hasConceptScore W2052493313C120665830 @default.
- W2052493313 hasConceptScore W2052493313C121332964 @default.
- W2052493313 hasConceptScore W2052493313C138885662 @default.
- W2052493313 hasConceptScore W2052493313C15744967 @default.
- W2052493313 hasConceptScore W2052493313C160697094 @default.
- W2052493313 hasConceptScore W2052493313C16345878 @default.
- W2052493313 hasConceptScore W2052493313C192562407 @default.
- W2052493313 hasConceptScore W2052493313C2524010 @default.
- W2052493313 hasConceptScore W2052493313C2776502983 @default.
- W2052493313 hasConceptScore W2052493313C2777813233 @default.
- W2052493313 hasConceptScore W2052493313C2779918689 @default.
- W2052493313 hasConceptScore W2052493313C33923547 @default.
- W2052493313 hasConceptScore W2052493313C36365805 @default.
- W2052493313 hasConceptScore W2052493313C41895202 @default.
- W2052493313 hasConceptScore W2052493313C542102704 @default.
- W2052493313 hasLocation W20524933131 @default.
- W2052493313 hasOpenAccess W2052493313 @default.
- W2052493313 hasPrimaryLocation W20524933131 @default.
- W2052493313 hasRelatedWork W1676110787 @default.
- W2052493313 hasRelatedWork W1967992846 @default.
- W2052493313 hasRelatedWork W1971390571 @default.
- W2052493313 hasRelatedWork W2012862717 @default.
- W2052493313 hasRelatedWork W2017383910 @default.
- W2052493313 hasRelatedWork W2040537017 @default.
- W2052493313 hasRelatedWork W2052493313 @default.
- W2052493313 hasRelatedWork W2167451064 @default.
- W2052493313 hasRelatedWork W2970890401 @default.
- W2052493313 hasRelatedWork W4321259293 @default.
- W2052493313 isParatext "false" @default.
- W2052493313 isRetracted "false" @default.
- W2052493313 magId "2052493313" @default.
- W2052493313 workType "article" @default.