High sensitivity and interindividual variability in the response of the human circadian system to evening light

What this work gives Aellic

Within-subject laboratory dose-response study, 55 adults aged 18–30, 10 to 2,000 lux for 5 h in the evening: group ED50 for melatonin suppression was 24.6 lux, with individual values from 6 to 350 lux; 10, 30 and 50 lux delayed melatonin onset by 22, 77 and 109 min. Graded observational only because the registry has no value for a non-randomised experiment.

Where this sits in the engine

1 declared site: constants and thresholds in the code that point at this entry.

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