Search Results - "Schlangen, Luc"

Blue-enriched White Light in the Workplace Improves self-reported Alertness, Performance and Sleep Quality by Viola, Antoine U, James, Lynette M, Schlangen, Luc JM, Dijk, Derk-Jan

“…Objectives Specifications and standards for lighting installations in occupational settings are based on the spectral sensitivity of the classical visual…”
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Chronic artificial blue-enriched white light is an effective countermeasure to delayed circadian phase and neurobehavioral decrements by Najjar, Raymond P, Wolf, Luzian, Taillard, Jacques, Schlangen, Luc J M, Salam, Alex, Cajochen, Christian, Gronfier, Claude

“…Studies in Polar Base stations, where personnel have no access to sunlight during winter, have reported circadian misalignment, free-running of the sleep-wake…”
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Predicting melatonin suppression by light in humans: Unifying photoreceptor‐based equivalent daylight illuminances, spectral composition, timing and duration of light exposure by Giménez, Marina C., Stefani, Oliver, Cajochen, Christian, Lang, Dieter, Deuring, Gunnar, Schlangen, Luc J. M.

“…Light‐induced melatonin suppression data from 29 peer‐reviewed publications was analysed by means of a machine‐learning approach to establish which light…”
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The Lighting Environment, Its Metrology, and Non-visual Responses by Schlangen, Luc J M, Price, Luke L A

“…International standard CIE S 026:2018 provides lighting professionals and field researchers in chronobiology with a method to characterize light exposures with…”
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Optimising metameric spectra for integrative lighting to modulate the circadian system without affecting visual appearance by Zandi, Babak, Stefani, Oliver, Herzog, Alexander, Schlangen, Luc J. M., Trinh, Quang Vinh, Khanh, Tran Quoc

“…Smart integrative lighting systems aim to support human health and wellbeing by capitalising on the light-induced effects on circadian rhythms, sleep, and…”
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Morning sleep inertia in alertness and performance: effect of cognitive domain and white light conditions by Santhi, Nayantara, Groeger, John A, Archer, Simon N, Gimenez, Marina, Schlangen, Luc J M, Dijk, Derk-Jan

“…The transition from sleep to wakefulness entails a temporary period of reduced alertness and impaired performance known as sleep inertia. The extent to which…”
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Spectral Tuning of White Light Allows for Strong Reduction in Melatonin Suppression without Changing Illumination Level or Color Temperature by Souman, Jan L., Borra, Tobias, de Goijer, Iris, Schlangen, Luc J. M., Vlaskamp, Björn N. S., Lucassen, Marcel P.

“…Studies with monochromatic light stimuli have shown that the action spectrum for melatonin suppression exhibits its highest sensitivity at short wavelengths,…”
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The spectral composition of evening light and individual differences in the suppression of melatonin and delay of sleep in humans by Santhi, Nayantara, Thorne, Helen C., van der Veen, Daan R., Johnsen, Sigurd, Mills, Susan L., Hommes, Vanja, Schlangen, Luc J.M., Archer, Simon N., Dijk, Derk-Jan

“…:  The effect of light on circadian rhythms and sleep is mediated by a multi‐component photoreceptive system of rods, cones and melanopsin‐expressing…”
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Patient room lighting influences on sleep, appraisal and mood in hospitalized people by Giménez, Marina C., Geerdinck, Leonie M., Versteylen, Mathijs, Leffers, Pieter, Meekes, Gaby J. B. M., Herremans, Hannelore, Ruyter, Boris, Bikker, Jan Willem, Kuijpers, Petra M. J. C., Schlangen, Luc J. M.

“…Summary Irregular 24 h light/dark cycles with night‐time light exposure and a low amplitude are disruptive for sleep, mood and circadian rhythms. Nevertheless…”
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The impact of morning light intensity and environmental temperature on body temperatures and alertness by te Kulve, Marije, Schlangen, Luc J.M, Schellen, Lisje, Frijns, Arjan J.H, van Marken Lichtenbelt, Wouter D

“…Abstract Indoor temperature and light exposure are known to affect body temperature, productivity and alertness of building occupants. However, not much is…”
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Early evening light mitigates sleep compromising physiological and alerting responses to subsequent late evening light by te Kulve, Marije, Schlangen, Luc J. M., van Marken Lichtenbelt, Wouter D.

“…The widespread use of electric light and electronic devices has resulted in an excessive exposure to light during the late-evening and at night. This late…”
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An inventory of human light exposure behaviour by Siraji, Mushfiqul Anwar, Lazar, Rafael Robert, van Duijnhoven, Juliëtte, Schlangen, Luc J. M., Haque, Shamsul, Kalavally, Vineetha, Vetter, Céline, Glickman, Gena L., Smolders, Karin C. H. J., Spitschan, Manuel

“…Light exposure is an essential driver of health and well-being, and individual behaviours during rest and activity modulate physiologically relevant aspects of…”
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Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults by Brown, Timothy M, Brainard, George C, Cajochen, Christian, Czeisler, Charles A, Hanifin, John P, Lockley, Steven W, Lucas, Robert J, Münch, Mirjam, O'Hagan, John B, Peirson, Stuart N, Price, Luke L A, Roenneberg, Till, Schlangen, Luc J M, Skene, Debra J, Spitschan, Manuel, Vetter, Céline, Zee, Phyllis C, Wright, Jr, Kenneth P

“…Ocular light exposure has important influences on human health and well-being through modulation of circadian rhythms and sleep, as well as neuroendocrine and…”
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Blue-Enriched Lighting for Older People Living in Care Homes: Effect on Activity, Actigraphic Sleep, Mood and Alertness by Hopkins, Samantha, Morgan, Peter Lloyd, Schlangen, Luc J M, Williams, Peter, Skene, Debra J, Middleton, Benita

“…Environmental (little outdoor light; low indoor lighting) and age-related physiological factors (reduced light transmission through the ocular lens, reduced…”
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Low-intensity blue-enriched white light (750 lux) and standard bright light (10,000 lux) are equally effective in treating SAD. A randomized controlled study by Meesters, Ybe, Dekker, Vera, Schlangen, Luc J M, Bos, Elske H, Ruiter, Martine J

“…Photoreceptor cells containing melanopsin play a role in the phase-shifting effects of short-wavelength light. In a previous study, we compared the standard…”
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Improving adjustment to daylight saving time transitions with light by Xu, Mengzhu, Papatsimpa, Charikleia, Schlangen, Luc, Linnartz, Jean-Paul

“…Daylight saving time (DST) is currently utilized in many countries with the rationale that it enhances the alignment between daylight hours and activity peaks…”
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The effect of high correlated colour temperature office lighting on employee wellbeing and work performance by Mills, Peter R, Tomkins, Susannah C, Schlangen, Luc J M

“…The effects of lighting on the human circadian system are well-established. The recent discovery of 'non-visual' retinal receptors has confirmed an anatomical…”
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Differential impact in young and older individuals of blue-enriched white light on circadian physiology and alertness during sustained wakefulness by Gabel, Virginie, Reichert, Carolin F., Maire, Micheline, Schmidt, Christina, Schlangen, Luc J. M., Kolodyazhniy, Vitaliy, Garbazza, Corrado, Cajochen, Christian, Viola, Antoine U.

“…We tested the effect of different lights as a countermeasure against sleep-loss decrements in alertness, melatonin and cortisol profile, skin temperature and…”
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Circadian-Time Sickness: Time-of-Day Cue-Conflicts Directly Affect Health by van Ee, Raymond, Van de Cruys, Sander, Schlangen, Luc J.M, Vlaskamp, Björn N.S

“…A daily rhythm that is not in synchrony with the environmental light–dark cycle (as in jetlag and shift work) is known to affect mood and health through an as…”
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A “Melanopic” Spectral Efficiency Function Predicts the Sensitivity of Melanopsin Photoreceptors to Polychromatic Lights by Enezi, Jazi al, Revell, Victoria, Brown, Timothy, Wynne, Jonathan, Schlangen, Luc, Lucas, Robert

“…Photoreception in the mammalian retina is not restricted to rods and cones but extends to a small number of intrinsically photosensitive retinal ganglion cells…”
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