Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Senescence of spatial chromatic contrast sensitivity. I. Detection under conditions controlling for optical factors

Not Accessible

Your library or personal account may give you access

Abstract

Chromatic contrast thresholds for spatially varying patterns of various spatial frequencies (0.5, 1, 2, and 4 cycles per degree) were measured for ten older (65–77 yr of age) and ten younger (18–30 yr of age) observers. The stimuli were Gabor patches modulated along S-varying or (L – M)-varying chromatic axes. Thresholds were determined for two sets of stimuli. For one set of stimuli, the mean chromaticity and luminance were equated at the cornea for all observers. The second set of stimuli was corrected for ocular media density differences to equate stimulation of each of the three cone types at the retina for each individual. Chromatic contrast thresholds were higher for older observers for all stimuli tested. The magnitude of this difference showed little dependence on spatial frequency. When stimuli were equated at the cornea, this difference was greater for S-varying stimuli. When stimuli were equated at the retina, the age-related difference in thresholds for S-varying stimuli was reduced. Both optical and neural factors contribute to these age-related losses in spatial chromatic contrast sensitivity.

© 2005 Optical Society of America

Full Article  |  PDF Article
More Like This
Senescence of spatial chromatic contrast sensitivity. II. Matching under natural viewing conditions

Peter B. Delahunt, Joseph L. Hardy, Katsunori Okajima, and John S. Werner
J. Opt. Soc. Am. A 22(1) 60-67 (2005)

Senescence of foveal and parafoveal cone sensitivities and their relations to macular pigment density

John S. Werner, Michelle L. Bieber, and Brooke E. Schefrin
J. Opt. Soc. Am. A 17(11) 1918-1932 (2000)

Aging and the saturation of colors. 1. Colorimetric purity discrimination

James M. Kraft and John S. Werner
J. Opt. Soc. Am. A 16(2) 223-230 (1999)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved