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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 4, Iss. 8 — Aug. 1, 1987
  • pp: 1428–1438

Equiluminance: spatial and temporal factors and the contribution of blue-sensitive cones

Patrick Cavanagh, Donald I. A. MacLeod, and Stuart M. Anstis  »View Author Affiliations


JOSA A, Vol. 4, Issue 8, pp. 1428-1438 (1987)
http://dx.doi.org/10.1364/JOSAA.4.001428


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Abstract

Equiluminance ratios for red/green, red/blue and green/blue sine-wave gratings were determined by using a minimum-motion heterochromatic matching technique that permitted reliable settings at temporal frequencies as low as 0.5 Hz. The red/green equiluminance ratio was influenced by temporal but not spatial frequency, the green/blue ratio was influenced by spatial but not temporal frequency, and the red/blue ratio was influenced by both. After bleaching of the blue-sensitive cones, there was no change in equiluminance ratios, indicating no contribution of the blue-sensitive cones to the luminance channel even at low temporal and spatial frequencies. The inhomogeneity of yellow pigmentation within the macular region was identified as the source of the spatial-frequency effect on the blue/green ratio.

© 1987 Optical Society of America

History
Original Manuscript: June 23, 1986
Manuscript Accepted: March 11, 1987
Published: August 1, 1987

Citation
Patrick Cavanagh, Donald I. A. MacLeod, and Stuart M. Anstis, "Equiluminance: spatial and temporal factors and the contribution of blue-sensitive cones," J. Opt. Soc. Am. A 4, 1428-1438 (1987)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-4-8-1428

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