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Title: Increased Vulnerability to Pattern-Related Visual Stress in Myalgic Encephalomyelitis
Authors: Wilson, Rachel L.
Paterson, Kevin B.
Hutchinson, Claire V.
First Published: 3-Nov-2015
Publisher: SAGE Publications
Citation: Perception, 2015, 44 (12), pp. 1422-1426
Abstract: The objective of this study was to determine vulnerability to pattern-related visual stress in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). A total of 20 ME/CFS patients and 20 matched (age, gender) controls were recruited to the study. Pattern-related visual stress was determined using the Pattern Glare Test. Participants viewed three patterns, the spatial frequencies (SF) of which were 0.3 (low-SF), 2.3 (mid-SF), and 9.4 (high-SF) cycles per degree (c/deg). They reported the number of distortions they experienced when viewing each pattern. ME/CFS patients exhibited significantly higher pattern glare scores than controls for the mid-SF pattern. Mid-high SF differences were also significantly higher in patients than controls. These findings provide evidence of altered visual perception in ME/CFS. Pattern-related visual stress may represent an identifiable clinical feature of ME/CFS that will prove useful in its diagnosis. However, further research is required to establish if these symptoms reflect ME/CFS-related changes in the functioning of sensory neural pathways.
DOI Link: 10.1177/0301006615614467
ISSN: 0301-0066
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2015, the author. Licensee: SAGE. Reprints and permissions: Archived in accordance with the Publisher's Green Route - Open Access archiving policy.
Appears in Collections:Published Articles, Dept. of Neuroscience, Psychology and Behaviour

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