Abstract：
:To date, it is largely unknown which light settings define the optimum to steer alertness and cognitive control during regular daytime working hours. In the current article, we used a multimeasure approach combined with a relatively large sample size ( N = 60) and a large range of intensity levels (20-2000 lux at eye level) to investigate the dose-dependent relationship between light and correlates of alertness and executive control during regular working hours in the morning and afternoon. Each participant was exposed to a single-intensity light level for 1 h after a 30-min baseline phase (100 lux at the eye) in the morning and afternoon (on separate days) during their daily routine. Results revealed no clear dose-dependent relationships between 1-h daytime light exposure and correlates of alertness or executive control. Subjective correlates showed only very modest linear relationships with the log-transformed illuminance, and we found no significant effects of light intensity on the behavioral and physiological indicators. Overall, these results suggest that daytime exposure to more intense light, at least for 1 h of exposure, may not systematically benefit alertness or executive functioning. However, future research is required to investigate effects of longer exposure durations and potential moderations by prior light exposure, personal characteristics, and spectrum.
journal_name
J Biol Rhythmsjournal_title
Journal of biological rhythmsauthors
Smolders KCHJ,Peeters ST,Vogels IMLC,de Kort YAWdoi
10.1177/0748730418796438subject
Has Abstractpub_date
2018-12-01 00:00:00pages
649-661issue
6eissn
0748-7304issn
1552-4531journal_volume
33pub_type
杂志文章abstract：:The endogenous circadian rhythm of melatonin in humans provides information regarding the resetting response of the human circadian timing system to changes in the light-dark (LD) cycle. Alterations in the LD cycle have both acute and chronic effects on the observed melatonin rhythm. Investigations to date have firmly...
journal_title：Journal of biological rhythms
pub_type： 杂志文章,评审
doi：10.1177/074873049701200610
更新日期：1997-12-01 00:00:00
abstract：:DEC1 and DEC2-basic helix-loop-helix transcription factors-exhibit a circadian expression in the suprachiasmatic nucleus and other peripheral tissues and seem to play roles in regulating the mammalian circadian rhythm by suppressing the CLOCK/BMAL1-activated promoters of Per1, Dec1, and Dec2. The authors present data ...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730405280195
更新日期：2005-10-01 00:00:00
abstract：:The circadian clock plays an important role in adaptation in time and space by synchronizing changes in physiological, developmental, and behavioral traits of organisms with daily and seasonal changes in their environment. We have studied some features of the circadian activity and clock organization in a northern Dro...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730412455916
更新日期：2012-10-01 00:00:00
abstract：:The hematologic system performs a number of essential functions, including oxygen transport, the execution of the immune response against tumor cells and invading pathogens, and hemostasis (blood clotting). These roles are performed by erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (p...
journal_title：Journal of biological rhythms
pub_type： 杂志文章,评审
doi：10.1177/0748730415592729
更新日期：2015-10-01 00:00:00
abstract：:Groups of Syrian hamsters were exposed to LD cycles with twilight transitions and photoperiods simulating natural lighting conditions at the summer solstice (SS), equinox, and winter solstice (WS) at 41 degrees N and at the winter solstice at the Arctic Circle (WS 66 degrees N) but with daytime illuminance truncated a...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730404272907
更新日期：2005-04-01 00:00:00
abstract：:The purpose of this study was to determine whether decreased day lengths affect reproduction or the immune system in inbred mice. Irrespective of a nocturnal pineal melatonin rise, the signal for day length information, body and testis weights were the same in various strains 8 weeks after transfer from long to short ...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873002129002348
更新日期：2002-02-01 00:00:00
abstract：:Numerous studies have demonstrated sleep-promoting effects of melatonin treatment in humans, as evidenced by subjects' self-reports, polysomnographic recordings, and continuous actigraphic registration of motor activity. The sleep-promoting effects of either physiological or pharmacological doses of melatonin typicall...
journal_title：Journal of biological rhythms
pub_type： 杂志文章,评审
doi：10.1177/074873049701200620
更新日期：1997-12-01 00:00:00
abstract：:Numerous studies have used the classic van der Pol oscillator, which contains a cubic nonlinearity, to model the effect of light on the human circadian pacemaker. Jewett and Kronauer demonstrated that Aschoff's rule could be incorporated into van der Pol type models and used a van der Pol type oscillator with higher o...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873099129000867
更新日期：1999-12-01 00:00:00
abstract：:Extracellular spike activity from three different types of visual interneurons found in the optic lobe of the giant cockroach Blaberus giganteus was recorded. The spike rate of all three types of neurons fluctuated in a circadian manner in constant darkness (DD). Two types, so-called "on" neurons (ON1 and ON2), respon...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049300800404
更新日期：1993-01-01 00:00:00
abstract：:Honey bee (Apis mellifera) workers emerge from the pupae with no circadian rhythms in behavior or brain clock gene expression but show strong rhythms later in life. This postembryonic development of circadian rhythms is reminiscent of that of infants of humans and other primates but contrasts with most insects, which ...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730412440851
更新日期：2012-06-01 00:00:00
abstract：:Many mammalian cell types show daily rhythms in gene expression driven by a circadian pacemaker. For example, cultured astrocytes display circadian rhythms in Period1 and Period2 expression. It is not known, however, how or which intercellular factors synchronize and sustain rhythmicity in astrocytes. Because astrocyt...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730409332042
更新日期：2009-04-01 00:00:00
abstract：:Previous research has demonstrated a clear link between late chronotype and depression. The vulnerability factors underpinning this link, however, are unclear. Here the relationship between two specific emotion regulation strategies, cognitive reappraisal and expressive suppression, and chronotype was investigated usi...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730417709111
更新日期：2017-08-01 00:00:00
abstract：:In many animals, the circadian clock plays a role in adapting to the coming season by measuring day length. The mechanism for measuring day length and its neuronal circuits remains elusive, however. Under laboratory conditions, the fruit fly, Drosophila melanogaster, displays 2 activity peaks: one in the morning and o...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730417738612
更新日期：2018-02-01 00:00:00
abstract：:Using quantitative autoradiography, 2-(125)I-melatonin binding was investigated throughout the light:dark cycle in the suprachiasmatic nuclei (SCN), paraventricular nuclei (PVT), and pars tuberalis (PT) of adult female Siberian hamsters kept for 10 weeks in either long or short photoperiods (LP or SP, respectively). P...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049601100406
更新日期：1996-12-01 00:00:00
abstract：:Obesity during pregnancy causes numerous maternal and fetal health complications, but the underlying mechanisms remain unclear. Adipose tissue dysfunction in obesity has previously been linked to disruption of the intrinsic adipose clock gene network that is crucial for normal metabolic function. This adipose clock al...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730418772499
更新日期：2018-06-01 00:00:00
abstract：:Photic signals affect circadian activity rhythms by both phasic and tonic mechanisms that modulate pacemaker phase and period. In mammals, the effects of light on circadian activity are mediated by the retina, which communicates with the suprahiasmatic nucleus (SCN) by two different anatomical routes: the retino-hypot...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873048700200104
更新日期：1987-04-01 00:00:00
abstract：:The circadian timing system has three principal elements: the retina, the intergeniculate leaflet (IGL) of the thalamus, and the suprachiasmatic nucleus (SCN). Since the human circadian timing system cannot be studied experimentally, we have used another primate, the macaque monkey, to help provide insight into the or...
journal_title：Journal of biological rhythms
pub_type： 杂志文章,评审
doi：
更新日期：1993-01-01 00:00:00
abstract：:Temperature compensation and period determination by casein kinase 1 (CK1) are conserved features of eukaryotic circadian rhythms, whereas the clock gene transcription factors that facilitate daily gene expression rhythms differ between phylogenetic kingdoms. Human red blood cells (RBCs) exhibit temperature-compensate...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730419836370
更新日期：2019-04-01 00:00:00
abstract：:The circadian rhythm of eclosion activity and its pacemaker were analyzed in a series of latitudinal races of Drosophila auraria ranging from 34.2 degrees to 42.9 degrees N in Japan. The phase of the rhythm (psi EL) to the daily photoperiod (PP) changes as daylength is increased, and the slope of psi EL (PP) changes w...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：
更新日期：1989-07-01 00:00:00
abstract：:There is little evidence for the involvement of microRNAs (miRs) in the regulation of circadian rhythms, despite the potential relevance of these elements in the posttranscriptional regulation of the clock machinery. The present work aimed to identify miRs targeting circadian genes through a predictive analysis of con...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730413476827
更新日期：2013-04-01 00:00:00
abstract：:Daylight saving time (DST) is a source of circadian disruption impinging on millions of people every year. Our aim was to assess modifications, if any, in the number, type, and outcome of Accident & Emergency (A&E) visits/return visits over the DST months. The study included 366,527 visits and 84,380 return visits to ...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730418791097
更新日期：2018-10-01 00:00:00
abstract：:Surgical isolation of the suprachiasmatic nuclei (SCN) within a hypothalamic island is reported to produce loss of circadian rhythmicity. The results have been interpreted to indicate that SCN efferents are necessary for the expression of circadian rhythms. It is not clear, however, whether the loss of circadian rhyth...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049100600201
更新日期：1991-07-01 00:00:00
abstract：:Access to electric light might have shifted the ancestral timing and duration of human sleep. To test this hypothesis, we studied two communities of the historically hunter-gatherer indigenous Toba/Qom in the Argentinean Chaco. These communities share the same ethnic and sociocultural background, but one has free acce...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730415590702
更新日期：2015-08-01 00:00:00
abstract：:Austrovenus stutchburyi is an intertidal, burrowing, filter-feeding bivalve. It exhibits a strong, approximately tidal pattern in the time of gaping of its valves when in constant laboratory conditions. Individuals that have been held in laboratory conditions long enough to lose their overt gaping pattern will respond...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049701200208
更新日期：1997-04-01 00:00:00
abstract：:House sparrows (Passer domesticus) whose circadian rhythms of locomotor activity and feeding had been abolished by pinealectomy were held in constant dim light and periodically exposed to melatonin in the drinking water. By alternating 8 h of melatonin water with variable phases of tap water, rhythms with periods (T) ...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049501000305
更新日期：1995-09-01 00:00:00
abstract：:The ventral subparaventricular zone (vSPVZ) receives direct retinal input and influences the daily patterning of activity in rodents, making it a likely candidate for the mediation of acute behavioral responses to light (i.e., masking). We performed chemical lesions aimed at the vSPVZ of diurnal grass rats (Arvicanthi...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730415626251
更新日期：2016-04-01 00:00:00
abstract：:Entrainability of the circadian rhythm of mosquito flight and locomotor activity was investigated by giving a 24-hr temperature cycle (28 degrees C for 16 hr, 23 degrees C for 8 hr) to the free-running rhythm or by shifting the temperature cycle. The phase angle difference between the entrained rhythm and the temperat...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049300800304
更新日期：1993-10-01 00:00:00
abstract：:Male rose-ringed parakeets (Psittacula krameri) were transferred to a long photoperiod (LP; LD 16:8) or a short photoperiod (SP; LD 8:16) for 45 or 90 days on four dates corresponding to the beginnings of different reproductive phases in an annual testicular cycle, and testicular responsiveness was evaluated by compar...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/074873049200700102
更新日期：1992-04-01 00:00:00
abstract：:From the mathematical study of simple models for circadian rhythm, the authors identified a clear effect of saturation in the enzyme kinetics on the promotion or suppression of a sustained oscillation. In the models, a clock gene (per gene) is transcribed to produce mRNAs, which are translated to produce proteins in t...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730402238239
更新日期：2002-12-01 00:00:00
abstract：:The authors examined spatial working memory in the Morris water maze during the activity and rest periods of Wistar rats. Wheel-running activity was measured continuously as a marker of circadian phase. To minimize possible masking effects on performance, animals were placed in constant dim light the day before testin...
journal_title：Journal of biological rhythms
pub_type： 杂志文章
doi：10.1177/0748730404265688
更新日期：2004-08-01 00:00:00
