A whiter shade of pale, a blacker shade of dark: Parameters of spatially induced blackness

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dc.citation.volume23
dc.contributor.authorBimler D
dc.contributor.authorParamei GV
dc.contributor.authorIzmailov CA
dc.date.accessioned2008-04-02T21:55:12Z
dc.date.accessioned2016-03-06T22:25:26Z
dc.date.availableNO_RESTRICTION
dc.date.available2008-04-02T21:55:12Z
dc.date.available2016-03-06T22:25:26Z
dc.date.issued2006
dc.description.abstractThe surface-mode property of 'blackness' is induced by simultaneous contrast with an adjacent, more luminantsurround. As numerous studies have shown, the degree of blackness induced within an achromatic test field is afunction of the relative luminance of the adjacent chromatic inducing field, but not of its hue. But in the conversecase of chromatic test fields, susceptibility to blackening has been reported to vary with wavelength. The presentstudy investigates this possibility, that some wavelengths are more susceptible. We also questioned whether 'white'and 'black' sensory components function as opposites in blackness appearance. We recorded the appearance of acentral monochromatic test field of constant luminance (10 cd/m2), with wavelength ranging across the visiblespectrum, while a broadband white annulus was set to six luminance levels ranging across three log steps. Threecolor-normal observers followed a color-naming technique. All six opponent-hue names and their combinations were response options; blackness and whiteness in the test field could therefore be reported independently. Of primary interest were the achromatic responses. When represented within a multidimensional space, these revealed the 'white-to-black' dimension but in addition a quality (dimension) of 'desaturation.' Compared against chromatic properties of the test field, the results provide evidence that blackness is a function of inducing field brightness(not luminance). This result is in accord with observations made by Shinomori et al. (1997) using a different procedure. We conclude that blackness induction occurs at a stage of visual processing subsequent to the origin of the brightness signal from a combination of opponent-process channels.
dc.identifier.citationBimler, D. L.; Paramei, G. V.; Izmailov, C. A. (2006). A whiter shade of pale, a blacker shade of dark: Parameters of spatially induced blackness. Visual Neuroscience. Vol. 23, No. 3-4, pp. 579-582.
dc.identifier.harvestedMassey_Dark
dc.identifier.harvestedMassey_Dark
dc.identifier.issn0952-5238
dc.identifier.urihttps://hdl.handle.net/10179/586
dc.language.isoen
dc.publisherCambridge University Press
dc.relation.isbasedonVisual Neuroscience. Vol. 23, No. 3-4, pp. 579-582
dc.relation.isformatofhttp://dx.doi.org/10.1017/S0952523806233091
dc.subjectSpatially-induced blackness
dc.subjectChromatic light
dc.subjectColour naming
dc.subjectBidimensional achromatic quality
dc.subject.otherFields of Research::380000 Behavioural and Cognitive Sciences
dc.titleA whiter shade of pale, a blacker shade of dark: Parameters of spatially induced blackness
dc.typeJournal article
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