ArticleiScience2024
Seeing in the dark: High-order visual functions under scotopic conditions.
Article in iScience, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Neural subpopulations in marmoset area MT/MTC detect and discount saccade-related retinal motion.bioRxiv : the preprint server for biology · 2026Article
- Directing gaze to maximize surface color information from natural scenes.Scientific reports · 2026Article
- Eye movements do not preferentially test inferences in the blind spot.Scientific reports · 2025Article
- Temporal Sensitivity Under Photopic and Scotopic Conditions Across the Cortical Visual Hierarchy.Investigative ophthalmology & visual science · 2025Article
- Intact high-level visual functions in congenital rod-monochromacy.Frontiers in neuroscience · 2024Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It is unknown how and to what degree people function visually in almost complete darkness, where only rod photoreceptors are active (scotopic conditions). To explore this, we first tested scotopic acuity and crowding. We demonstrated the ∼1° foveal scotoma and found that crowding increases with eccentricity, resulting in optimal scotopic discrimination 2° into the periphery. We then investigated whether these limitations affect high-level foveal tasks. We recorded eye movements while testing reading and upright/inverted face matching under photopic and scotopic conditions. Under scotopic conditions, participants read accurately and showed a face inversion effect. Temporally, fixation durations were longer. Spatially, surprisingly, participants did not avert their gaze 2° into the periphery. Instead, they fixated on similar locations as under photopic conditions, locations that were shown to correlate with global perception. We propose that this result suggests global perception governs under scotopic conditions, and we discuss how receptive-field properties support this conclusion.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.