ArticleF1000Research2025
Sneezing in response to naturalistic bright light exposure.
Article in F1000Research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Background: The photic sneeze reflex (PSR) is a common but underexplored phenomenon where bright light triggers sneezing, affecting ~30% of the population. This study aimed to characterise the light conditions inducing PSR. Methods: One male PSR-affected participant logged sneezing events during a 30-day real-world light exposure study. An indoor setup using a multi-primary LED source and an integrating sphere delivered 30-second light stimuli while pupillometric data were collected. Results: A total of 82 sneezing events were recorded, averaging 2.73 sneezes/day (range: 1-6 per event). Illuminance increased tenfold before sneezing, peaking 2 minutes prior, and returned to baseline within 10 minutes. Despite exposure to 150+ stimuli, artificial sneezing was not induced, though high illuminance consistently triggered tickling sensations. Conclusions: Sudden increases in environmental lighting can provoke PSR. While artificial stimuli elicited only tickling, further refinement of the protocol could enable reliable PSR induction, thereby facilitating mechanistic research.
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