Vision and Hyper-Responsiveness in Migraine
<b>: </b>We investigated contrast processing in relation to visual comfort from coloured light in individuals with migraine. In Experiment 1, 24 individuals who experienced migraine with aura (MA), 15 migraine without aura (MO), and 23 healthy controls, identified which of four patterns,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Vision |
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| Online Access: | https://www.mdpi.com/2411-5150/3/4/62 |
| _version_ | 1818361546977312768 |
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| author | Amelia Aldrich Paul Hibbard Arnold Wilkins |
| author_facet | Amelia Aldrich Paul Hibbard Arnold Wilkins |
| author_sort | Amelia Aldrich |
| collection | DOAJ |
| description | <b>: </b>We investigated contrast processing in relation to visual comfort from coloured light in individuals with migraine. In Experiment 1, 24 individuals who experienced migraine with aura (MA), 15 migraine without aura (MO), and 23 healthy controls, identified which of four patterns, one in each quadrant, had the greatest contrast. Although there were no significant differences between groups, contrast discrimination was superior in the visual field affected by aura in all eight participants in whom the aura was consistently lateralised. In Experiment 2, 20 participants without aura and 20 controls selected comfortable light with a chromaticity close to the daylight (Planckian) locus, whilst 20 individuals with aura chose more strongly saturated colours, mostly distant from the locus. In Experiment 3, nine participants with consistently unilateral aura undertook the contrast discrimination task wearing (a) lenses that provided a comfortable colour of light and (b) grey lenses of similar transmission. With grey lenses, seven of the nine individuals with unilateral aura showed a superior performance in the affected field, as before. With lenses providing a comfortable colour, however, the performance was relatively poor for the nine individuals with unilateral aura, but not for the 10 controls. This was the case in both visual fields. The cortical hyper-responsiveness with which migraine is associated may improve the perception of contrast. The perception is poorer (and more normal) with ophthalmic lenses having a comfortable colour. |
| first_indexed | 2024-12-13T21:18:25Z |
| format | Article |
| id | doaj.art-08d9ba6c7d9347fcb4386c983c6ae4e8 |
| institution | Directory Open Access Journal |
| issn | 2411-5150 |
| language | English |
| last_indexed | 2024-12-13T21:18:25Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Vision |
| spelling | doaj.art-08d9ba6c7d9347fcb4386c983c6ae4e82022-12-21T23:31:11ZengMDPI AGVision2411-51502019-11-01346210.3390/vision3040062vision3040062Vision and Hyper-Responsiveness in MigraineAmelia Aldrich0Paul Hibbard1Arnold Wilkins2Department of Psychology, University of Essex, Wivenhoe Park, Essex, Colchester CO4 3SQ, UKDepartment of Psychology, University of Essex, Wivenhoe Park, Essex, Colchester CO4 3SQ, UKDepartment of Psychology, University of Essex, Wivenhoe Park, Essex, Colchester CO4 3SQ, UK<b>: </b>We investigated contrast processing in relation to visual comfort from coloured light in individuals with migraine. In Experiment 1, 24 individuals who experienced migraine with aura (MA), 15 migraine without aura (MO), and 23 healthy controls, identified which of four patterns, one in each quadrant, had the greatest contrast. Although there were no significant differences between groups, contrast discrimination was superior in the visual field affected by aura in all eight participants in whom the aura was consistently lateralised. In Experiment 2, 20 participants without aura and 20 controls selected comfortable light with a chromaticity close to the daylight (Planckian) locus, whilst 20 individuals with aura chose more strongly saturated colours, mostly distant from the locus. In Experiment 3, nine participants with consistently unilateral aura undertook the contrast discrimination task wearing (a) lenses that provided a comfortable colour of light and (b) grey lenses of similar transmission. With grey lenses, seven of the nine individuals with unilateral aura showed a superior performance in the affected field, as before. With lenses providing a comfortable colour, however, the performance was relatively poor for the nine individuals with unilateral aura, but not for the 10 controls. This was the case in both visual fields. The cortical hyper-responsiveness with which migraine is associated may improve the perception of contrast. The perception is poorer (and more normal) with ophthalmic lenses having a comfortable colour.https://www.mdpi.com/2411-5150/3/4/62migraine auracontrast discriminationcortical hyperexcitability |
| spellingShingle | Amelia Aldrich Paul Hibbard Arnold Wilkins Vision and Hyper-Responsiveness in Migraine Vision migraine aura contrast discrimination cortical hyperexcitability |
| title | Vision and Hyper-Responsiveness in Migraine |
| title_full | Vision and Hyper-Responsiveness in Migraine |
| title_fullStr | Vision and Hyper-Responsiveness in Migraine |
| title_full_unstemmed | Vision and Hyper-Responsiveness in Migraine |
| title_short | Vision and Hyper-Responsiveness in Migraine |
| title_sort | vision and hyper responsiveness in migraine |
| topic | migraine aura contrast discrimination cortical hyperexcitability |
| url | https://www.mdpi.com/2411-5150/3/4/62 |
| work_keys_str_mv | AT ameliaaldrich visionandhyperresponsivenessinmigraine AT paulhibbard visionandhyperresponsivenessinmigraine AT arnoldwilkins visionandhyperresponsivenessinmigraine |