Colour Constancy Across the Life Span: Evidence for Compensatory Mechanisms

Wuerger, Sophie ORCID: 0000-0003-0080-5813
(2013) Colour Constancy Across the Life Span: Evidence for Compensatory Mechanisms. PLOS ONE, 8 (5). e63921-.

[img] Other
wuerger2013_Colour constancy across the life span_PLOS1.PDF - Published version

Download (1MB) | Preview


It is well known that the peripheral visual system declines with age: the yellowing of the lens causes a selective reduction of short-wavelength light and sensitivity losses occur in the cone receptor mechanisms. At the same time, our subjective experience of colour does not change with age. The main purpose of this large-scale study (n = 185) covering a wide age range of colour-normal observers (18-75 years of age) was to assess the extent to which the human visual system is able to compensate for the changes in the optical media and at which level of processing this compensation is likely to occur. We report two main results: (1) Supra-threshold parafoveal colour perception remains largely unaffected by the age-related changes in the optical media (yellowing of the lens) whereas our ability to discriminate between small colour differences is compromised with an increase in age. (2) Significant changes in colour appearance are only found for unique green settings under daylight viewing condition which is consistent with the idea that the yellow-blue mechanism is most affected by an increase in age due to selective attenuation of short-wavelength light. The data on the invariance of hue perception, in conjunction with the age-related decline in chromatic sensitivity, provides evidence for compensatory mechanisms that enable colour-normal human observers a large degree of colour constancy across the life span. These compensatory mechanisms are likely to originate at cortical sites.

Item Type: Article
Additional Information: ## TULIP Type: Articles/Papers (Journal) ##
Uncontrolled Keywords: Lens, Crystalline, Humans, Color Perception, Aging, Models, Biological, Adult, Aged, Middle Aged, Retinal Cone Photoreceptor Cells, Color Vision, Discrimination, Psychological
Depositing User: Symplectic Admin
Date Deposited: 06 May 2020 10:01
Last Modified: 18 Jan 2023 23:52
DOI: 10.1371/journal.pone.0063921
Related URLs: