Fig. 3From: Impact of blue-depleted white light on pupil dynamics, melatonin suppression and subjective alertness following real-world light exposureChanges in salivary melatonin concentration (a) and SSS values (b) during the baseline (< 10 lx, − 3 → 0 h) and experimental light exposure (150 lx, 0 → 3 h) for both the blue-depleted (grey) and standard (black) white LED lamps. Melatonin data were z-score transformed and averaged prior to plotting. Mean ± SD are shownBack to article page