The Glare Effect Test and the Impact of Age on Luminosity Thresholds
The glare effect (GE) is an illusion in which a white region appears self-luminous when surrounded by linearly decreasing luminance ramps. It has been shown that the magnitude of the luminosity effect can be modulated by manipulating the luminance range of the gradients. In the present study we test...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-06-01
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| Series: | Frontiers in Psychology |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fpsyg.2017.01132/full |
| _version_ | 1818901419021828096 |
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| author | Alessio Facchin Alessio Facchin Alessio Facchin Roberta Daini Roberta Daini Roberta Daini Daniele Zavagno Daniele Zavagno |
| author_facet | Alessio Facchin Alessio Facchin Alessio Facchin Roberta Daini Roberta Daini Roberta Daini Daniele Zavagno Daniele Zavagno |
| author_sort | Alessio Facchin |
| collection | DOAJ |
| description | The glare effect (GE) is an illusion in which a white region appears self-luminous when surrounded by linearly decreasing luminance ramps. It has been shown that the magnitude of the luminosity effect can be modulated by manipulating the luminance range of the gradients. In the present study we tested the thresholds for the GE on two groups of adults: young (20–30 years old) and elderly (60–75 years old). Purpose of our perspective study was to test the possibility of transforming the GE into a test that could easily measure thresholds for luminosity and discomfort glare. The Glare Effect Test (GET) consisted in 101 printed cards that differed from each other for the range of luminance ramps. Participants were assessed with GET and a battery of visual tests: visual acuity, contrast sensitivity, illusion of length perception, and Ishihara test. Specifically in the GET, participants were required to classify cards on the basis of two reference cards (solid black-no gradient; full range black to white gradient). PSEs of the GE show no correlation with the other visual tests, revealing a divergent validity. A significant difference between young and elderly was found: contrary to our original expectations, luminosity thresholds of GE for elderly were higher than those for young, suggesting a non-direct relationship between luminosity perception and discomfort glare. |
| first_indexed | 2024-12-19T20:19:23Z |
| format | Article |
| id | doaj.art-8e697aed514e4fea82c4de8b210c7d79 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-12-19T20:19:23Z |
| publishDate | 2017-06-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Psychology |
| spelling | doaj.art-8e697aed514e4fea82c4de8b210c7d792022-12-21T20:07:03ZengFrontiers Media S.A.Frontiers in Psychology1664-10782017-06-01810.3389/fpsyg.2017.01132259323The Glare Effect Test and the Impact of Age on Luminosity ThresholdsAlessio Facchin0Alessio Facchin1Alessio Facchin2Roberta Daini3Roberta Daini4Roberta Daini5Daniele Zavagno6Daniele Zavagno7Department of Psychology, University of Milano-BicoccaMilan, ItalyMilan Center for NeuroscienceMilan, ItalyOptics and Optometry Research CentreMilan, ItalyDepartment of Psychology, University of Milano-BicoccaMilan, ItalyMilan Center for NeuroscienceMilan, ItalyOptics and Optometry Research CentreMilan, ItalyDepartment of Psychology, University of Milano-BicoccaMilan, ItalyMilan Center for NeuroscienceMilan, ItalyThe glare effect (GE) is an illusion in which a white region appears self-luminous when surrounded by linearly decreasing luminance ramps. It has been shown that the magnitude of the luminosity effect can be modulated by manipulating the luminance range of the gradients. In the present study we tested the thresholds for the GE on two groups of adults: young (20–30 years old) and elderly (60–75 years old). Purpose of our perspective study was to test the possibility of transforming the GE into a test that could easily measure thresholds for luminosity and discomfort glare. The Glare Effect Test (GET) consisted in 101 printed cards that differed from each other for the range of luminance ramps. Participants were assessed with GET and a battery of visual tests: visual acuity, contrast sensitivity, illusion of length perception, and Ishihara test. Specifically in the GET, participants were required to classify cards on the basis of two reference cards (solid black-no gradient; full range black to white gradient). PSEs of the GE show no correlation with the other visual tests, revealing a divergent validity. A significant difference between young and elderly was found: contrary to our original expectations, luminosity thresholds of GE for elderly were higher than those for young, suggesting a non-direct relationship between luminosity perception and discomfort glare.http://journal.frontiersin.org/article/10.3389/fpsyg.2017.01132/fullglare effectillusion sensitivityagingperception |
| spellingShingle | Alessio Facchin Alessio Facchin Alessio Facchin Roberta Daini Roberta Daini Roberta Daini Daniele Zavagno Daniele Zavagno The Glare Effect Test and the Impact of Age on Luminosity Thresholds Frontiers in Psychology glare effect illusion sensitivity aging perception |
| title | The Glare Effect Test and the Impact of Age on Luminosity Thresholds |
| title_full | The Glare Effect Test and the Impact of Age on Luminosity Thresholds |
| title_fullStr | The Glare Effect Test and the Impact of Age on Luminosity Thresholds |
| title_full_unstemmed | The Glare Effect Test and the Impact of Age on Luminosity Thresholds |
| title_short | The Glare Effect Test and the Impact of Age on Luminosity Thresholds |
| title_sort | glare effect test and the impact of age on luminosity thresholds |
| topic | glare effect illusion sensitivity aging perception |
| url | http://journal.frontiersin.org/article/10.3389/fpsyg.2017.01132/full |
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