An inventory of human light exposure related behaviour DOI Creative Commons
Mushfiqul Anwar Siraji, Rafael Lazar, J. van Duijnhoven

et al.

Research Square (Research Square), Journal Year: 2023, Volume and Issue: unknown

Published: March 21, 2023

Abstract Light exposure is an essential driver of health and well-being, individual behaviours during rest activity modulate physiologically-relevant aspects light exposure. Further understanding the that influence photic patterns may provide insight into volitional contributions to physiological effects guide bevavioral points intervention. Here, we present a novel, self-reported psychometrically validated inventory capture exposure-related behaviour, Exposure Behaviour Assessment (LEBA). An expert panel prepared initial 48-item pool spanning different behaviours. Responses, consisting rating frequency engaging in per-item behaviour on 5-point Likert type scale, were collected online survey yielding responses from geographically unconstrained sample (690 completed responses, 74 countries, 28 time zones). The exploratory factor analysis (EFA) subsample (n=428) rendered five-factor solution with 25 items (Wearing blue filters, spending outdoors, using phone smartwatch bed, before bedtime, morning daytime). In confirmatory (CFA) performed independent subset participants (n=262), removed two additional attain best fit for (CFI=0.95, TLI=0.95, RMSEA=0.06). internal consistency reliability coefficient total instrument yielded McDonald’s Omega=0.68. Measurement model invariance between native non-native English speakers showed our attained highest level (residual invariance; CFI=0.95, RMSEA=0.05). Lastly, short form LEBA (n=18) was developed Item Response Theory complete (n=690). psychometric properties indicate usability measure offer scalable characterize remote samples. available under open-access CC-BY-NC-ND license. Instrument webpage: https://leba-instrument.org/ GitHub repository containing this manuscript: https://github.com/leba-instrument/leba-manuscript

Language: Английский

The cognitive impact of light: illuminating ipRGC circuit mechanisms DOI
Heather Mahoney, Tiffany M. Schmidt

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

Published: Jan. 26, 2024

Language: Английский

Citations

22
Associations between light exposure and sleep timing and sleepiness while awake in a sample of UK adults in everyday life DOI Creative Commons
Altuğ Didikoğlu, Navid Mohammadian, Sheena Johnson

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(42)

Published: Oct. 9, 2023

Experimental and interventional studies show that light can regulate sleep timing sleepiness while awake by setting the phase of circadian rhythms supporting alertness. The extent to which differences in exposure explain variations within between individuals everyday life remains less clear. Here, we establish a method address this deficit, incorporating an open-source wearable wrist-worn logger (SpectraWear) smartphone-based online data collection. We use it simultaneously record longitudinal (in melanopic equivalent daylight illuminance), timing, subjective alertness over seven days convenience sample 59 UK adults without externally imposed challenge (e.g., shift work or jetlag). Participants reliably had strong daily but frequently were exposed during daytime more pre-bedtime episodes than recommended [T. M. Brown et al. , PLoS Biol. 20 e3001571 (2022)]. Prior several hours was associated with lower with, particular, brighter late episode after wake linked reduced early morning (sleep inertia). Higher longer onset latency. Early correlated reproducible robust patterns higher daytime/lower night-time exposure. Our study establishes for collecting health/performance provides evidence associations important determinants health performance.

Language: Английский

Citations

34
Light as a Modulator of Non-Image-Forming Brain Functions—Positive and Negative Impacts of Increasing Light Availability DOI Creative Commons
Islay Campbell, Roya Sharifpour, Gilles Vandewalle

et al.

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

Citations

30
The lower correlated color temperature with higher illuminance nocturnal light environment improves cognitive performance and sleep quality DOI
Jingxin Nie, Qihong Zou,

L Chen

et al.

Building and Environment, Journal Year: 2024, Volume and Issue: 251, P. 111221 - 111221

Published: Jan. 21, 2024

Language: Английский

Citations

9
Advancing Neuroscience and Therapy: Insights into Genetic and Non-Genetic Neuromodulation Approaches DOI Creative Commons

Weijia Zhi,

Ying Li, Lifeng Wang

et al.

Cells, Journal Year: 2025, Volume and Issue: 14(2), P. 122 - 122

Published: Jan. 15, 2025

Neuromodulation stands as a cutting-edge approach in the fields of neuroscience and therapeutic intervention typically involving regulation neural activity through physical chemical stimuli. The purpose this review is to provide an overview evaluation different neuromodulation techniques, anticipating clearer understanding future developmental trajectories challenges faced within domain that can be achieved. This categorizes techniques into genetic methods (including optogenetics, chemogenetics, sonogenetics, magnetogenetics) non-genetic deep brain stimulation, transcranial magnetic direct current ultrasound photobiomodulation therapy, infrared neuromodulation, electromagnetic sensory stimulation multi-physical-factor techniques). By systematically evaluating principles, mechanisms, advantages, limitations, efficacy modulating neuronal potential applications interventions neurological disorders these comprehensive picture gradually emerging regarding advantages their trajectory, clinical applications. highlights significant advancements applying treat psychiatric disorders. Genetic methods, such sonogenetics magnetogenetics, have demonstrated high specificity temporal precision targeting populations, while offer noninvasive versatile options. transformative research practice underscored, emphasizing need for integration innovation technologies, optimization delivery improvement mediums, toxicity fully harness potential.

Language: Английский

Citations

1
Light exposure behaviors predict mood, memory and sleep quality DOI Creative Commons
Mushfiqul Anwar Siraji, Manuel Spitschan, Vineetha Kalavally

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Aug. 1, 2023

Ample research has shown that light influences our emotions, cognition, and sleep quality. However, little work examined whether different exposure-related behaviors, such as daytime exposure to electric nighttime usage of gadgets, especially before sleep, influence quality cognition. Three-hundred-and-one Malaysian adults (Mean

Language: Английский

Citations

20
Integrated lighting ergonomics: A review on the association between non-visual effects of light and ergonomics in the enclosed cabins DOI
Zhiming Gou,

Bingchen Gou,

Wenyi Liao

et al.

Building and Environment, Journal Year: 2023, Volume and Issue: 243, P. 110616 - 110616

Published: July 13, 2023

Language: Английский

Citations

19
Effects of daytime exposure to short-wavelength-enriched white light on alertness and cognitive function among moderately sleep-restricted university students DOI Creative Commons
Mushfiqul Anwar Siraji, Leilah K Grant, Alexandre Schaefer

et al.

Building and Environment, Journal Year: 2024, Volume and Issue: 252, P. 111245 - 111245

Published: Feb. 2, 2024

We examined the impact of an 8-h exposure to short-wavelength-enriched white light during day on cognitive performance, alertness, and mood moderately sleep-restricted university students in a simulated classroom setting. A total 28 participants (mean age: 23.57 ± 2.69; 19 female) were assigned one two conditions, each with equal melanopic daylight efficacy ratio (melDER∼0.9). However, they differed photopic illuminances, falling within upper lower limits prescribed standards for lighting: low illuminance (LI; 309.33 3.04 horizontal 128.26 7.37 vertical EDI lux) high (HI; 513 12.59 213.70 11.62 lux). Cognitive procedural memory, declarative subjective evaluated using N-back Task, Finger Tapping Free Recall Modified Karolinska Sleepiness Scale, Visual Analogue Scales, respectively. No statistically significant differences observed any measures between lighting conditions (p.adjusted > 0.05). These results indicate that exposures at illuminances current do not adversely affect mood, as assessed this study. findings have meaningful implications design, providing opportunity enhance energy efficiency without compromising working mood.

Language: Английский

Citations

4
Recommendations for light-dosimetry field studies based on a meta-analysis of personal light levels of office workers DOI Creative Commons

SW de Vries,

Myrta Gkaintatzi-Masouti, J. van Duijnhoven

et al.

Lighting Research & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: May 14, 2024

Daytime light levels are important for human physiology. Office workers spend most of their daytime inside buildings where it is unclear whether they receive healthy levels. A recent publication presented recommendations the minimum level optimal health, expressed in melanopic equivalent daylight illuminance (EDI). The current paper assesses this recommended achieved by office through a meta-analysis personal workers, obtained from light-dosimetry field studies. From our literature search, we identified nine eligible papers. These papers comprised data studies one or multiple buildings, over more seasons, 1 to 62 participants, and 19 564 workdays. After analysing data, found that none offices 250 EDI was met entire day. Only out 6 median 13 mean reported were above value. Unfortunately, these conclusions less groundbreaking than hoped for, due large differences between study protocols. This resulted variety (unreported) characteristics (i.e. light-dosimeter, participant, building environment) which complicated fair comparison different To facilitate meta-analyses studies, introduce collection reporting We based on gaps meta-analysis, supplemented other

Language: Английский

Citations

4
Post-Occupancy Evaluation of Office Lighting – What Can We Learn from Light-Dosimetry? DOI Creative Commons
Steffen Hartmeyer,

A. M. Davies,

Marilyne Andersen

et al.

LEUKOS The Journal of the Illuminating Engineering Society of North America, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 24

Published: Jan. 9, 2025

Language: Английский

Citations

0