Our ability to pick out objects from their backgrounds based on differences in luminance has traditionally been thought to remain constant across different light intensities.
This assumption has been based largely on previous studies using relatively dim stimuli (Geisler et al, 2007). But researchers at the State University of New York set out to investigate how contrast sensitivity is affected in a greater range of light intensities.
In tests on cats and humans, the group measured the responses of neurons to different combinations of contrast and light intensities.
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From national policy influence, historic celebrations and new beginnings, July to September delivered impactful milestones shaping the future of eye care.
This Road Safety Week, The College of Optometrists and Association of Optometrists are urging all drivers to ensure they have regular eye tests to check their vision still meets UK driving standards.