Van de Werken M., Booij S.H., van der Zwan J.E., Simons M.J.P, Gordijn M.C.M, & Beersma D.G.M. The biological clock modulates the human cortisol response in a multiplicative fashion. Chronobiology International, 31:572-580. (2013)
Human cortisol levels follow a clear circadian rhythm. We investigated the contribution of alternation of sleep and wakefulness and the circadian clock, using forced desynchrony. Cortisol levels were best described by a multiplication of a circadian and a wake-time component. The human cortisol response is modulated by circadian phase. Exposure to stress at an unnatural phase, as in…
Doctoral thesis. Maan van de Werken. Dawn, Light at night and the clock: impact on human alertness, performance and physiology. University of Groningen, The Netherlands. 2013.
Morning Sleep Inertia in Alertness and Performance: Effect of Cognitive Domain and White Light Conditions
Santhi, N., Groeger, J. A., Archer, S. N., Gimenez, M., Schlangen, L. J. M., & Dijk, D.-J. Morning Sleep Inertia in Alertness and Performance: Effect of Cognitive Domain and White Light Conditions. PloS One, 8(11), e79688. (2013).
Doctoral thesis. Marina C. Giménez. Light from dawn to dusk: human entrainment in a changing environment. University of Groningen, The Netherlands. 2013.
Short-wavelength attenuated polychromatic white light during work at night: limited melatonin suppression without substantial decline of alertness
Van de Werken, M., Giménez, M. C., de Vries, B., Beersma, D. G. M., & Gordijn, M. C. M. Short-wavelength attenuated polychromatic white light during work at night: limited melatonin suppression without substantial decline of alertness. Chronobiology International, 30(7), 843–854. (2013).
‘The optimal working schedule is different for everyone.’ Increasingly, Dutch businesses are looking for ways to increase health of their shift workers, according to chronobiologist Marijke Gordijn of the Univerity of Groningen. Her company Chrono@Work increasingly gets asked about what to do concerning workplace lighting, food patterns and the right way to schedule personnel. Gordijn…
Text originally in Dutch.