ArticleProceedings of the National Academy of Sciences of the United States of America2025
Visual adaptation stronger at the horizontal than the vertical meridian: Linking performance with V1 cortical surface area.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed.
- Measuring the dynamics of attentional capture in hand and eye movements with virtual reality.Behavior research methods · 2026Article
- Covert spatial attention is uniform across cardinal meridians despite differential adaptation.Journal of vision · 2026Article
- Saccade direction modulates the temporal dynamics of presaccadic attention.Journal of vision · 2025Article
- Covert spatial attention is uniform across cardinal meridians despite differential adaptation.bioRxiv : the preprint server for biology · 2025Article
- Visual field asymmetries develop throughout adolescence.iScience · 2025Article
- Visual adaptation stronger at the horizontal than the vertical meridian: Linking performance with V1 cortical surface area.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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Abstract
Visual adaptation reduces bioenergetic expenditure by decreasing sensitivity to repetitive and similar stimuli. In human adults, visual performance varies systematically around the polar angle for many visual dimensions and tasks: Performance is superior along the horizontal than the vertical meridian (horizontal-vertical anisotropy, HVA) and the lower than upper vertical meridian (vertical meridian asymmetry, VMA). These asymmetries are resistant to spatial and temporal attention. However, it remains unknown whether visual adaptation differs around the polar angle. Here, we investigated how adaptation influences contrast sensitivity at the fovea and perifovea across the four cardinal meridian locations for both horizontal and vertical stimuli in an orientation discrimination task. In the nonadapted conditions, the HVA was more pronounced for horizontal than vertical stimuli. For both orientations, adaptation was stronger along the horizontal than the vertical meridian, exceeding foveal adaptation. Additionally, perifoveal adaptation effects positively correlated with individual V1 cortical surface area. These findings reveal that visual adaptation mitigates the HVA in contrast sensitivity, fostering perceptual uniformity around the visual field while conserving bioenergetic resources.
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