Recommendations for daytime, evening, and nighttime indoor light exposure to best support physiology, sleep, and wakefulness in healthy adults

PLoS Biology, Journal Year: 2022, Volume and Issue: 20(3), P. e3001571 - e3001571

Published: March 17, 2022

Ocular light exposure has important influences on human health and well-being through modulation of circadian rhythms sleep, as well neuroendocrine cognitive functions. Prevailing patterns do not optimally engage these actions for many individuals, but advances in our understanding the underpinning mechanisms emerging lighting technologies now present opportunities to adjust promote optimal physical mental performance. A newly developed, international standard provides a SI-compliant way quantifying influence intrinsically photosensitive, melanopsin-expressing, retinal neurons that mediate effects. The report recommendations lighting, based an expert scientific consensus expressed easily measured quantity (melanopic equivalent daylight illuminance (melaponic EDI)) defined within this standard. are supported by detailed analysis sensitivity circadian, neuroendocrine, alerting responses ocular provide straightforward framework inform design practice.

Language: Английский

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Sleep, circadian rhythms and health

Interface Focus, Journal Year: 2020, Volume and Issue: 10(3), P. 20190098 - 20190098

Published: April 17, 2020

At the core of human thought, for majority individuals in developed nations at least, there is tacit assumption that as a species we are unfettered by demands imposed our biology and can do what want, whatever time choose, whereas reality every aspect physiology behaviour constrained 24 h beat arising from deep within evolution. Our daily circadian rhythms sleep/wake cycle allow us to function optimally dynamic world, adjusting day/night cycle. The themes this review focus upon growing realization ignore sleep systems peril, paper considers mechanisms generate regulate systems; happens mechanistically when these collapse result societal pressures disease; how disruption stress linked; why mental illness invariably occur together; employers attempt mitigate some problems associated with working against internal temporal biology. While health costs be reduced, short-term will always significant negative consequences shift work loss. With mind, society needs address issue decide justified workplace.

Language: Английский

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The cognitive impact of light: illuminating ipRGC circuit mechanisms

Nature reviews. Neuroscience, Journal Year: 2024, Volume and Issue: 25(3), P. 159 - 175

Published: Jan. 26, 2024

Language: Английский

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A predictive model for daylight performance based on multimodal generative adversarial networks at the early design stage

Energy and Buildings, Journal Year: 2024, Volume and Issue: 305, P. 113876 - 113876

Published: Jan. 3, 2024

Language: Английский

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Non-image forming effects of illuminance and correlated color temperature of office light on alertness, mood, and performance across cognitive domains

Building and Environment, Journal Year: 2018, Volume and Issue: 149, P. 253 - 263

Published: Dec. 4, 2018

Language: Английский

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Light, lighting and human health

Lighting Research & Technology, Journal Year: 2021, Volume and Issue: 54(2), P. 101 - 144

Published: April 28, 2021

Light can impact human health via the visual and non-visual systems originating in retina of eye or as optical radiation falling on skin. This paper provides a summary what is known about these impacts. Topics covered include aspects lighting likely to cause eyestrain headaches; increase risk falls; induce circadian disruption; enhance sleep; mitigate Alzheimer’s disease depression; produce tissue damage; alleviate diseases through phototherapy inactivate viruses germicidal irradiation. It concluded that undoubtedly influenced by lighting, but there are four conditions should be attached such simple assertion. First, either positive negative. Second, affected many factors other than lighting. Third, severity effects light exposure vary widely from short-lived trivial long-term fatal. Fourth, same have very different impacts for individuals depending their age medical status. Taken together, imply care required when judging veracity relevance broad assertions benefits health.

Language: Английский

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Light as a Modulator of Non-Image-Forming Brain Functions—Positive and Negative Impacts of Increasing Light Availability

Clocks & Sleep, Journal Year: 2023, Volume and Issue: 5(1), P. 116 - 140

Published: March 17, 2023

Light use is rising steeply, mainly because of the advent light-emitting diode (LED) devices. LEDs are frequently blue-enriched light sources and may have different impacts on non-image forming (NIF) system, which maximally sensitive to blue-wavelength light. Most importantly, timing LED device widespread, leading novel exposure patterns NIF system. The goal this narrative review discuss multiple aspects that we think should be accounted for when attempting predict how situation will affect impact brain functions. We first cover both image-forming pathways brain. then detail our current understanding human cognition, sleep, alertness, mood. Finally, questions concerning adoption lighting screens, offer new opportunities improve well-being, but also raise concerns about increasing exposure, detrimental health, particularly in evening.

Language: Английский

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ENLIGHT: A consensus checklist for reporting laboratory-based studies on the non-visual effects of light in humans

EBioMedicine, Journal Year: 2023, Volume and Issue: 98, P. 104889 - 104889

Published: Dec. 1, 2023

BackgroundThere is no consensus on reporting light characteristics in studies investigating non-visual responses to light. This project aimed develop a checklist for laboratory-based investigations the impact of physiology.MethodsA four-step modified Delphi process (three questionnaire-based feedback rounds and one face-to-face group discussion) involving international experts was conducted reach items be included checklist. Following process, resulting tested pilot phase with independent experts.FindingsAn initial list 61 related light-based interventions condensed final containing 25 items, based upon among (final n = 60). Nine were deemed necessary report regardless research question or context. A description each item provided accompanying Explanation Elaboration (E&E) document. The testing led minor textual clarifications E&E document.InterpretationThe ENLIGHT Checklist first consensus-based documenting ocular human studies. implementation will enhance by ensuring comprehensive documentation, enhancing reproducibility, enabling data aggregation across studies.FundingNetwork European Institutes Advanced Study (NETIAS) Constructive Thinking (CAT) programme; Sir Henry Wellcome Postdoctoral Fellowship (Wellcome Trust, 204686/Z/16/Z); Netherlands Organisation Health Research Development VENI fellowship (2020–09150161910128); U.S. Department Defense Grant (W81XWH-16-1-0223); National University Singapore (NUHSRO/2022/038/Startup/08); Foundation (NRF2022-THE004-0002).

Language: Английский

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A resting-state EEG dataset for sleep deprivation

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: April 24, 2024

Abstract To investigate the impact of sleep deprivation (SD) on mood, alertness, and resting-state electroencephalogram (EEG), we present an eyes-open EEG dataset. The dataset comprises recordings cognitive data from 71 participants undergoing two testing sessions: one involving SD other normal sleep. In each session, engaged in EEG. Psychomotor Vigilance Task (PVT) was employed for alertness measurement. Emotional sleepiness were measured using Positive Negative Affect Scale (PANAS) Stanford Sleepiness (SSS). Additionally, to examine influence individual quality traits SD, Pittsburgh Sleep Quality Index (PSQI) Buss-Perry Aggression Questionnaire (BPAQ) utilized. This dataset’s sharing may contribute open measurements field SD.

Language: Английский

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Daytime melatonin and light independently affect human alertness and body temperature

Journal of Pineal Research, Journal Year: 2019, Volume and Issue: 67(1)

Published: April 30, 2019

Light significantly improves alertness during the night (Cajochen, Sleep Med Rev, 11, 2007 and 453; Ruger et al., AJP Regul Integr Comp Physiol, 290, 2005 R1413), but results are less conclusive at daytime (Lok J Biol Rhythms, 33, 2018 589). Melatonin core body temperature levels those times of day may contribute to differences in alerting effects light. In this experiment, combined effect exogenous melatonin administration light intensity on alertness, temperature, skin was studied. The goal assess whether (a) dependent, (b) soporific mediated via thermoregulatory system, (c) can improve after melatonin-induced sleepiness daytime. 10 subjects (5 females, 5 males) received mg) dim (10 lux) and, a separate occasion, bright polychromatic white (2000 lux). addition, they placebo both under conditions. Subjects participated all four conditions balanced order, yielding within-subject design, lasting from noon 04:00 pm. Alertness performance were assessed half hourly, while measured continuously. Saliva samples detect concentrations collected hourly. increased subjects. Subjective distal ingestion. Bright exposure did not change subjective scores, proximal increased, decreased. affect these parameters condition. These indicate that increases sleepiness, confirming role for regulation, ingestion affected without altering therefore changes seem nonessential by ingestion, able feelings nor performance. Other (physiological) factors nighttime.

Language: Английский

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