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. Author manuscript; available in PMC: 2009 Oct 14.
Published in final edited form as: Am J Physiol Endocrinol Metab. 2004 Mar 23;287(1):E174–E181. doi: 10.1152/ajpendo.00385.2003

Figure 3.

Figure 3

Method used for melatonin phase assessment using Dim Light Melatonin Onset (DLMOn25%), Dim Light Melatonin Offset (DLMOff25%) and midpoint (MP25%) phase markers. The thick line represents the three-harmonics fitted curve; the dashed line represents the amplitude of the fitted curve; the dotted line represents 25% of the amplitude. The figure also illustrates the bright light exposure session (L.E.S.)-induced melatonin suppression. The study days corresponding to the profile are given at the top of the figure. CR1: constant routine 1, CR2: constant routine 2.

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