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Visual stress: origins and treatment

Wilkins, Arnold (2021) 'Visual stress: origins and treatment.' CNS, 6. 74 - 86.

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Abstract

The statistical characteristics of visual images that provoke discomfort generally differ from those of images found in nature. Computational models of the cortex suggest that uncomfortable images are processed inefficiently, a suggestion consistent with the large electrical and haemodynamic cortical response such images induce. The response is greater in individuals who customarily experience visual discomfort, such as those with migraine. Text provides an unnatural image and can be uncomfortable when small and closely spaced. It can provoke illusions of color, shape and motion, just as do patterns of stripes, and these illusions can disturb reading and reading acquisition. Changing the lighting chromaticity can sometimes reduce these illusions, particularly in patients with migraine aura, thereby facilitating reading.

Item Type: Article
Uncontrolled Keywords: Visual Stress, Flicker, Stripes, Lighting, Migraine, Aura, Discomfort
Divisions: Faculty of Science and Health > Psychology, Department of
Depositing User: Elements
Date Deposited: 08 Apr 2021 10:02
Last Modified: 08 Apr 2021 10:02
URI: http://repository.essex.ac.uk/id/eprint/30132

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