Increased brightness assimilation in rod vision
Summary: Our visual system uses contextual cues to estimate the brightness of surfaces: brightness can shift toward (assimilation) or away from (contrast) the brightness of the surroundings. We investigated brightness induction at different light levels and found a potential influence of rod photore...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004224028360 |
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| author | Pablo A. Barrionuevo Alexander C. Schütz Karl R. Gegenfurtner |
| author_facet | Pablo A. Barrionuevo Alexander C. Schütz Karl R. Gegenfurtner |
| author_sort | Pablo A. Barrionuevo |
| collection | DOAJ |
| description | Summary: Our visual system uses contextual cues to estimate the brightness of surfaces: brightness can shift toward (assimilation) or away from (contrast) the brightness of the surroundings. We investigated brightness induction at different light levels and found a potential influence of rod photoreceptors on brightness induction. We then used a novel tetrachromatic display to generate stimuli differentially exciting rods or cones at a fixed light adaptation level. Under rod vision, brightness assimilation was enhanced while brightness contrast was not altered in comparison to cone vision. We ruled out that this effect was mediated by the low resolution of night vision. Our findings suggest that rod vision affects the high-level interpretation of visual scenes that results in differences in brightness assimilation but not contrast. Our results imply that the visual system employs more perceptual inferences under rod vision than under cone vision to solve visual ambiguities in complex spatial displays. |
| format | Article |
| id | doaj-art-67efda0a74fa40128d359e736e2fba93 |
| institution | Kabale University |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-67efda0a74fa40128d359e736e2fba932025-01-19T06:26:28ZengElsevieriScience2589-00422025-02-01282111609Increased brightness assimilation in rod visionPablo A. Barrionuevo0Alexander C. Schütz1Karl R. Gegenfurtner2Allgemeine Psychologie, Justus-Liebig-Universität, Giessen, 35394 Hessen, Germany; Instituto de Investigación en Luz, Ambiente y Visión, Consejo Nacional de Investigaciones Científicas y Técnicas – Universidad Nacional de Tucumán, San Miguel de Tucumán, Tucumán T4002BLR, Argentina; Corresponding authorAllgemeine und Biologische Psychologie, Philipps-Universität Marburg, Marburg, 35032 Hessen, GermanyAllgemeine Psychologie, Justus-Liebig-Universität, Giessen, 35394 Hessen, GermanySummary: Our visual system uses contextual cues to estimate the brightness of surfaces: brightness can shift toward (assimilation) or away from (contrast) the brightness of the surroundings. We investigated brightness induction at different light levels and found a potential influence of rod photoreceptors on brightness induction. We then used a novel tetrachromatic display to generate stimuli differentially exciting rods or cones at a fixed light adaptation level. Under rod vision, brightness assimilation was enhanced while brightness contrast was not altered in comparison to cone vision. We ruled out that this effect was mediated by the low resolution of night vision. Our findings suggest that rod vision affects the high-level interpretation of visual scenes that results in differences in brightness assimilation but not contrast. Our results imply that the visual system employs more perceptual inferences under rod vision than under cone vision to solve visual ambiguities in complex spatial displays.http://www.sciencedirect.com/science/article/pii/S2589004224028360Sensory neuroscienceCognitive neuroscience |
| spellingShingle | Pablo A. Barrionuevo Alexander C. Schütz Karl R. Gegenfurtner Increased brightness assimilation in rod vision iScience Sensory neuroscience Cognitive neuroscience |
| title | Increased brightness assimilation in rod vision |
| title_full | Increased brightness assimilation in rod vision |
| title_fullStr | Increased brightness assimilation in rod vision |
| title_full_unstemmed | Increased brightness assimilation in rod vision |
| title_short | Increased brightness assimilation in rod vision |
| title_sort | increased brightness assimilation in rod vision |
| topic | Sensory neuroscience Cognitive neuroscience |
| url | http://www.sciencedirect.com/science/article/pii/S2589004224028360 |
| work_keys_str_mv | AT pabloabarrionuevo increasedbrightnessassimilationinrodvision AT alexandercschutz increasedbrightnessassimilationinrodvision AT karlrgegenfurtner increasedbrightnessassimilationinrodvision |