May 9, 2013
Brain, Not Eye Mechanisms Keep Color Vision Constant Across Lifespan
Optical media changes with age, but neural mechanisms keep color perception constant
Cone receptors in the human eye lose their color sensitivity with age, but our subjective experience of color remains largely unchanged over the years. This ability to compensate for age-related changes in color perception rests in higher levels of the visual system, according to research published May 8 in the open access journal PLOS ONE by Sophie Wuerger from the University of Liverpool, UK.
"We found that color vision remains fairly constant across the life span, despite the known age-related yellowing of the lens," says Wuerger. "This suggests that the visual brain re-calibrates itself as we get older."
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