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Figure 4 | BMC Research Notes

Figure 4

From: Preliminary evidence that light through the eyelids can suppress melatonin and phase shift dim light melatonin onset

Figure 4

Change in circadian phase. Change in circadian phase, as measured by DLMO, for seven subjects who completed the second, three-night study. A negative value indicates that DLMO was delayed relative to the dark, control night as a result of the light exposure. Mean ± SEM for the low and high light levels are also shown. Note that some subjects had similar phase shifts and their data are overlapping in the graph.

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