ND-0454 · 2003 · Other
High Sensitivity of the Human Circadian Melatonin Rhythm to Resetting by Short Wavelength Light
Lockley SW, Brainard GC, Czeisler CA. Journal of Clinical Endocrinology and Metabolism. 2003.
doi.org/10.1210/jc.2003-030570 · Finding drafted from the abstract
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What the source reports
460 nm light delayed the body clock and suppressed melatonin about twice as much as 555 nm light at equal photon density, so the authors call photopic lux the wrong measure.
Limitations
Controlled laboratory exposure in a small sample.
Design questions and applications
Do not specify circadian lighting in photopic lux alone.
Field
Light and circadian
Notes and follow-up
Added from the Corpus Desk (card lockley-2003-sensitivity) on 2026-11-09. Evidence strength and translation distance not yet rated. WELL label held for review.
indexed under
Mechanism
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