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Linked References

1. R. Y. Moore, “Circadian rhythms: basic neurobiology and clinical applications,” Annual Review of Medicine, vol. 48, pp. 253–266, 1997. View at Publisher · View at Google Scholar · View at Scopus
2. G. C. Brainard, J. R. Hanifin, J. M. Greeson et al., “Action spectrum for melatonin regulation in humans: evidence for a novel circadian photoreceptor,” Journal of Neuroscience, vol. 21, no. 16, pp. 6405–6412, 2001. View at Scopus
3. M. S. Rea, M. G. Figueiro, J. D. Bullough, and A. Bierman, “A model of phototransduction by the human circadian system,” Brain Research Reviews, vol. 50, no. 2, pp. 213–228, 2005. View at Publisher · View at Google Scholar · View at Scopus
4. H. R. Wright, L. C. Lack, and K. J. Patridge, “Light emitting diodes can be used to phase delay the melatonin rhythm,” Journal of Pineal Research, vol. 31, no. 4, pp. 350–355, 2001.
5. C. Cajochen, M. Münch, S. Kobialka et al., “High sensitivity of human melatonin, alertness, thermoregulation, and heart rate to short wavelength light,” Journal of Clinical Endocrinology and Metabolism, vol. 90, no. 3, pp. 1311–1316, 2005. View at Publisher · View at Google Scholar · View at Scopus
6. M. G. Figueiro, J. D. Bullough, A. Bierman, C. R. Fay, and M. S. Rea, “On light as an alerting stimulus at night,” Acta Neurobiologiae Experimentalis, vol. 67, no. 2, pp. 171–178, 2007. View at Scopus
7. C. Cajochen, C. Jud, M. Münch, S. Kobialka, A. Wirz-Justice, and U. Albrecht, “Evening exposure to blue light stimulates the expression of the clock gene PER2 in humans,” European Journal of Neuroscience, vol. 23, no. 4, pp. 1082–1086, 2006. View at Publisher · View at Google Scholar · View at Scopus
8. F. Halberg and R. B. Howard, “24 hour periodicity and experimental medicine examples and interpretations,” Postgraduate Medicine, vol. 24, no. 4, pp. 349–358, 1958. View at Scopus
9. U. M. Nater, N. Rohleder, W. Schlotz, U. Ehlert, and C. Kirschbaum, “Determinants of the diurnal course of salivary alpha-amylase,” Psychoneuroendocrinology, vol. 32, no. 4, pp. 392–401, 2007. View at Publisher · View at Google Scholar · View at Scopus
10. N. A. Nicolson, “Measurement of cortisol,” in Handbook of Physiological Research Methods in Health Physiology, L. G. Luecken and L. C. Gallo, Eds., Sage, 2008.
11. J. C. Pruessner, O. T. Wolf, D. H. Hellhammer et al., “Free cortisol levels after awakening: a reliable biological marker for the assessment of adrenocortical activity,” Life Sciences, vol. 61, no. 26, pp. 2539–2549, 1997. View at Publisher · View at Google Scholar · View at Scopus
12. A. Clow, F. Hucklebridge, T. Stalder, P. Evans, and L. Thorn, “The cortisol awakening response: more than a measure of HPA axis function,” Neuroscience and Biobehavioral Reviews, vol. 35, no. 1, pp. 97–103, 2010. View at Publisher · View at Google Scholar · View at Scopus
13. A. Clow, L. Thorn, P. Evans, and F. Hucklebridge, “The Awakening Cortisol Response: methodological Issues and Significance,” Stress, vol. 7, no. 1, pp. 29–37, 2004. View at Publisher · View at Google Scholar · View at Scopus
14. E. Fries, L. Dettenborn, and C. Kirschbaum, “The cortisol awakening response (CAR): facts and future directions,” International Journal of Psychophysiology, vol. 72, no. 1, pp. 67–73, 2009. View at Publisher · View at Google Scholar · View at Scopus
15. S. Sensi, V. Pace Palitti, and M. T. Guagnano, “Chronobiology in endocrinology,” Annali dell'Istituto Superiore di Sanita, vol. 29, no. 4, pp. 613–631, 1993. View at Scopus
16. F. E. Yates and J. Urquhart, “Control of plasma concentrations of adrenocortical hormones,” Physiological Reviews, vol. 42, no. 3, pp. 359–433, 1962. View at Scopus
17. S. R. Kunz-Ebrecht, C. Kirschbaum, M. Marmot, and A. Steptoe, “Differences in cortisol awakening response on work days and weekends in women and men from the Whitehall II cohort,” Psychoneuroendocrinology, vol. 29, no. 4, pp. 516–528, 2004. View at Publisher · View at Google Scholar · View at Scopus
18. C. E. Gribbin, S. E. Watamura, A. Cairns, et al., “The cortisol awakening response (CAR) in 2- to 4-year-old children: effects of acute nighttime sleep restriction, wake time, and daytime napping,” Developmental Psychobiology, vol. 54, no. 4, pp. 412–422, 2012. View at Publisher · View at Google Scholar
19. M. G. Figueiro and M. S. Rea, “Sleep opportunities and periodic light exposures: impact on biomarkers, performance and sleepiness,” Lighting Research and Technology, vol. 43, no. 3, pp. 349–369, 2011. View at Publisher · View at Google Scholar
20. E. Späth-Schwalbe, T. Schöller, W. Kern, H. L. Fehm, and J. Born, “Nocturnal adrenocorticotropin and cortisol secretion depends on sleep duration and decreases in association with spontaneous awakening in the morning,” Journal of Clinical Endocrinology and Metabolism, vol. 75, no. 6, pp. 1431–1435, 1992. View at Publisher · View at Google Scholar · View at Scopus
21. B. Griefahn and S. Robens, “The cortisol awakening response: a pilot study on the effects of shift work, morningness and sleep duration,” Psychoneuroendocrinology, vol. 33, no. 7, pp. 981–988, 2008. View at Publisher · View at Google Scholar · View at Scopus
22. R. Leproult, E. F. Colecchia, M. L'Hermite-Balériaux, and E. Van Cauter, “Transition from dim to bright light in the morning induces an immediate elevation of cortisol levels,” Journal of Clinical Endocrinology and Metabolism, vol. 86, no. 1, pp. 151–157, 2001. View at Publisher · View at Google Scholar · View at Scopus
23. F. A. J. L. Scheer and R. M. Buijs, “Light affects morning salivary cortisol in humans,” Journal of Clinical Endocrinology and Metabolism, vol. 84, no. 9, pp. 3395–3398, 1999. View at Scopus
24. C. M. Jung, S. B. S. Khalsa, F. A. J. L. Scheer et al., “Acute effects of bright light exposure on cortisol levels,” Journal of Biological Rhythms, vol. 25, no. 3, pp. 208–216, 2010. View at Publisher · View at Google Scholar · View at Scopus
25. T. Roenneberg, A. Wirz-Justice, and M. Merrow, “Life between clocks: daily temporal patterns of human chronotypes,” Journal of Biological Rhythms, vol. 18, no. 1, pp. 80–90, 2003. View at Publisher · View at Google Scholar · View at Scopus
26. M. G. Figueiro, R. Hamner, A. Bierman, and M. S. Rea, “Comparisons of three practical field devices used to measure personal light exposures and activity levels,” Lighting Research and Technology, vol. 44, no. 2, 2012. View at Publisher · View at Google Scholar
27. J. D. Bullough, “The blue-light hazard: a review,” Journal of the Illuminating Engineering Society, vol. 29, no. 2, pp. 6–14, 2000.
28. M. G. Figueiro, A. Bierman, B. Plitnick, and M. S. Rea, “Preliminary evidence that both blue and red light can induce alertness at night,” BMC Neuroscience, vol. 10, article 105, 2009. View at Publisher · View at Google Scholar · View at Scopus
29. J. C. Pruessner, C. Kirschbaum, G. Meinlschmid, and D. H. Hellhammer, “Two formulas for computation of the area under the curve represent measures of total hormone concentration versus time-dependent change,” Psychoneuroendocrinology, vol. 28, no. 7, pp. 916–931, 2003. View at Publisher · View at Google Scholar · View at Scopus
30. M. Hébert, S. K. Martin, C. Lee, and C. I. Eastman, “The effects of prior light history on the suppression of melatonin by light in humans,” Journal of Pineal Research, vol. 33, no. 4, pp. 198–203, 2002. View at Publisher · View at Google Scholar · View at Scopus
31. K. A. Smith, M. W. Schoen, and C. A. Czeisler, “Adaptation of human pineal melatonin suppression by recent photic history,” Journal of Clinical Endocrinology and Metabolism, vol. 89, no. 7, pp. 3610–3614, 2004. View at Publisher · View at Google Scholar · View at Scopus
32. M. G. Figueiro and M. S. Rea, “The effects of red and blue lights on circadian variations in cortisol, alpha amylase, and melatonin,” International Journal of Endocrinology, vol. 2010, Article ID 829351, 9 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
33. A. Ishida, T. Mutoh, T. Ueyama et al., “Light activates the adrenal gland: timing of gene expression and glucocorticoid release,” Cell Metabolism, vol. 2, no. 5, pp. 297–307, 2005. View at Publisher · View at Google Scholar · View at Scopus
34. S. R. Bornstein, W. C. Engeland, M. Ehrhart-Bornstein, and J. P. Herman, “Dissociation of ACTH and glucocorticoids,” Trends in Endocrinology and Metabolism, vol. 19, no. 5, pp. 175–180, 2008. View at Publisher · View at Google Scholar · View at Scopus
35. R. M. Buijs, J. Wortel, J. J. Van Heerikhuize, and A. Kalsbeek, “Novel environment induced inhibition of corticosterone secretion: physiological evidence for a suprachiasmatic nucleus mediated neuronal hypothalamo-adrenal cortex pathway,” Brain Research, vol. 758, no. 1-2, pp. 229–236, 1997. View at Publisher · View at Google Scholar · View at Scopus
36. R. M. Buijs, C. G. van Eden, V. D. Goncharuk, and A. Kalsbeek, “The biological clock tunes the organs of the body: timing by hormones and the autonomic nervous system,” Journal of Endocrinology, vol. 177, no. 1, pp. 17–26, 2003. View at Publisher · View at Google Scholar · View at Scopus
37. B. M. Kudielka, I. S. Federenko, D. H. Hellhammer, and S. Wüst, “Morningness and eveningness: the free cortisol rise after awakening in “early birds” and night owls,” Biological Psychology, vol. 72, no. 2, pp. 141–146, 2006. View at Publisher · View at Google Scholar · View at Scopus
38. National Sleep Foundation, “2006 Sleep in America poll: Summary of findings,” http://www.sleepfoundation.org/sites/default/files/2006_summary_of_findings.pdf.