Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000492862> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W2000492862 endingPage "336" @default.
- W2000492862 startingPage "323" @default.
- W2000492862 abstract "The effects of diphasic and polyphasic flicker on apparent spatial frequency were studied in several experiments through simultaneous spatial-frequency matches. In diphasic flicker the spatial phase of a sinusoidal grating alternated between two values in a counterphase fashion, and in polyphasic flicker the spatial phases of gratings were varied discretely in time in a variable number of steps. Both forms of flicker increased the apparent spatial frequency at low temporal frequencies, in the same manner as low-frequency monophasic flicker has been found to do. At high temporal frequencies, diphasic flicker doubled the apparent spatial frequency, as reported by Kelly (1966). We found that through high-frequency polyphasic flicker the spatial effect that Kelly mentions can be generalised to spatial frequency multiplication: polyphasic flicker produces not only the apparent second harmonic but also the third and the fourth harmonic, depending on the phase parameters. A numerical analysis showed that the spatial high-frequency effects can be explained through temporal integration of nonlinearly filtered input signals if a value of 200 td (1) is assumed for the nonlinearity constant in [Formula: see text] where B( I) is the brightness, I is the retinal illuminance, K is a scale constant, and I ½ is the constant of nonlinearity. A minimum value of 60 ms had to be estimated for integration time. An investigation of the integration time with diphasic flicker indicated that spatial integration time decreases when the level of light adaptation increases, and that the integration time for spatial effects is longer than for flicker fusion. The spatial effects of low-frequency and high-frequency flicker differ in so many respects that different neural processes have to be postulated for their explanation." @default.
- W2000492862 created "2016-06-24" @default.
- W2000492862 creator A5049698903 @default.
- W2000492862 creator A5070272319 @default.
- W2000492862 creator A5073870556 @default.
- W2000492862 date "1974-09-01" @default.
- W2000492862 modified "2023-10-17" @default.
- W2000492862 title "Diphasic and Polyphasic Temporal Modulations Multiply Apparent Spatial Frequency" @default.
- W2000492862 cites W1029292078 @default.
- W2000492862 cites W1988348976 @default.
- W2000492862 cites W2005327389 @default.
- W2000492862 cites W2017645333 @default.
- W2000492862 cites W2020577889 @default.
- W2000492862 cites W2029703998 @default.
- W2000492862 cites W2051859669 @default.
- W2000492862 cites W2068312922 @default.
- W2000492862 cites W2087677877 @default.
- W2000492862 cites W4236183522 @default.
- W2000492862 doi "https://doi.org/10.1068/p030323" @default.
- W2000492862 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/4459828" @default.
- W2000492862 hasPublicationYear "1974" @default.
- W2000492862 type Work @default.
- W2000492862 sameAs 2000492862 @default.
- W2000492862 citedByCount "22" @default.
- W2000492862 countsByYear W20004928622013 @default.
- W2000492862 countsByYear W20004928622016 @default.
- W2000492862 countsByYear W20004928622017 @default.
- W2000492862 crossrefType "journal-article" @default.
- W2000492862 hasAuthorship W2000492862A5049698903 @default.
- W2000492862 hasAuthorship W2000492862A5070272319 @default.
- W2000492862 hasAuthorship W2000492862A5073870556 @default.
- W2000492862 hasConcept C100921725 @default.
- W2000492862 hasConcept C111919701 @default.
- W2000492862 hasConcept C120665830 @default.
- W2000492862 hasConcept C121332964 @default.
- W2000492862 hasConcept C125245961 @default.
- W2000492862 hasConcept C127934551 @default.
- W2000492862 hasConcept C152484397 @default.
- W2000492862 hasConcept C158709400 @default.
- W2000492862 hasConcept C18903297 @default.
- W2000492862 hasConcept C19743564 @default.
- W2000492862 hasConcept C24890656 @default.
- W2000492862 hasConcept C36365805 @default.
- W2000492862 hasConcept C41008148 @default.
- W2000492862 hasConcept C86803240 @default.
- W2000492862 hasConceptScore W2000492862C100921725 @default.
- W2000492862 hasConceptScore W2000492862C111919701 @default.
- W2000492862 hasConceptScore W2000492862C120665830 @default.
- W2000492862 hasConceptScore W2000492862C121332964 @default.
- W2000492862 hasConceptScore W2000492862C125245961 @default.
- W2000492862 hasConceptScore W2000492862C127934551 @default.
- W2000492862 hasConceptScore W2000492862C152484397 @default.
- W2000492862 hasConceptScore W2000492862C158709400 @default.
- W2000492862 hasConceptScore W2000492862C18903297 @default.
- W2000492862 hasConceptScore W2000492862C19743564 @default.
- W2000492862 hasConceptScore W2000492862C24890656 @default.
- W2000492862 hasConceptScore W2000492862C36365805 @default.
- W2000492862 hasConceptScore W2000492862C41008148 @default.
- W2000492862 hasConceptScore W2000492862C86803240 @default.
- W2000492862 hasIssue "3" @default.
- W2000492862 hasLocation W20004928621 @default.
- W2000492862 hasLocation W20004928622 @default.
- W2000492862 hasOpenAccess W2000492862 @default.
- W2000492862 hasPrimaryLocation W20004928621 @default.
- W2000492862 hasRelatedWork W2009969545 @default.
- W2000492862 hasRelatedWork W2020048861 @default.
- W2000492862 hasRelatedWork W2070598105 @default.
- W2000492862 hasRelatedWork W2135085624 @default.
- W2000492862 hasRelatedWork W2136599446 @default.
- W2000492862 hasRelatedWork W2154109050 @default.
- W2000492862 hasRelatedWork W2326218444 @default.
- W2000492862 hasRelatedWork W2994380899 @default.
- W2000492862 hasRelatedWork W4261611 @default.
- W2000492862 hasRelatedWork W180497972 @default.
- W2000492862 hasVolume "3" @default.
- W2000492862 isParatext "false" @default.
- W2000492862 isRetracted "false" @default.
- W2000492862 magId "2000492862" @default.
- W2000492862 workType "article" @default.