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Author |
Correa, A.; Barba, A.; Padilla, F. |
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Title |
Light Effects on Behavioural Performance Depend on the Individual State of Vigilance |
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Journal Article |
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Year |
2016 |
Publication |
PloS one |
Abbreviated Journal |
PLoS One |
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Volume |
11 |
Issue |
11 |
Pages |
e0164945 |
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Keywords |
Human Health |
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Abstract |
Research has shown that exposure to bright white light or blue-enriched light enhances alertness, but this effect is not consistently observed in tasks demanding high-level cognition (e.g., Sustained Attention to Response Task-SART, which measures inhibitory control). Individual differences in sensitivity to light effects might be mediated by variations in the basal level of arousal. We tested this hypothesis by measuring the participants' behavioural state of vigilance before light exposure, through the Psychomotor Vigilance Task. Then we compared the effects of a blue-enriched vs. dim light at nighttime on the performance of the auditory SART, by controlling for individual differences in basal arousal. The results replicated the alerting effects of blue-enriched light, as indexed by lower values of both proximal temperature and distal-proximal gradient. The main finding was that lighting effects on SART performance were highly variable across individuals and depended on their prior state of vigilance. Specifically, participants with higher levels of basal vigilance before light exposure benefited most from blue-enriched lighting, responding faster in the SART. These results highlight the importance of considering basal vigilance to define the boundary conditions of light effects on cognitive performance. Our study adds to current research delineating the complex and reciprocal interactions between lighting effects, arousal, cognitive task demands and behavioural performance. |
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Departamento de Psicologia Experimental. Universidad de Granada, Granada, Spain |
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1932-6203 |
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PMID:27820822 |
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Call Number |
LoNNe @ kyba @ |
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1554 |
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Author |
Smith, R.; Bereitschaft, B. |
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Title |
Sustainable Urban Development? Exploring the Locational Attributes of LEED-ND Projects in the United States through a GIS Analysis of Light Intensity and Land Use |
Type |
Journal Article |
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Year |
2016 |
Publication |
Sustainability |
Abbreviated Journal |
Sustainability |
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Volume |
8 |
Issue |
6 |
Pages |
547 |
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Keywords |
Remote Sensing; Planning |
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Abstract |
LEED®-ND™ is the latest attempt to develop more sustainable urban environs in the
United States. The LEED®-ND™program was created to provide a green rating system that would improve the quality of life for all people through the inclusion of sustainable development practices. To achieve this, a premium is placed on the locational attributes of proposed projects under the “Smart Location and Linkages†credit category. The purpose of this paper is to explore the locational attributes of LEED®-ND™ projects in the United States to determine if projects are being located in areas that will result in achieving the program’s stated objectives. Specifically, this paper will examine two locational variables (i.e., night-time light intensity and land use cover) through the use of GIS to determine the effectiveness of these criteria. |
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2071-1050 |
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LoNNe @ kyba @ |
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1553 |
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Author |
Rybnikova, N.A.; Portnov, B.A. |
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Title |
Outdoor light and breast cancer incidence: a comparative analysis of DMSP and VIIRS-DNB satellite data |
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Journal Article |
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Year |
2016 |
Publication |
International Journal of Remote Sensing |
Abbreviated Journal |
International Journal of Remote Sensing |
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Volume |
38 |
Issue |
21 |
Pages |
5952-5961 |
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Keywords |
Human Health |
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Several population-level studies explored the association between breast cancer (BC) incidence and artificial light-at-night (ALAN), and found higher BC rates in more lit areas. Most of these studies used ALAN satellite data, available from the United States Defence Meteorological Satellite Program (US-DMSP), while, in recent years, higher-resolution ALAN data sources, such as Visible Infrared Imaging Radiometer Suite Day-Night Band (VIIRS-DNB), have become available. The present study aims to determine whether the use of different ALAN data sources may affect the BC–ALAN association. As the test case, we use data on BC incidence rates in women residing in the Greater Haifa Metropolitan Area (GHMA; Israel), matching them with US-DMSP and VIIRS-DNB data on ALAN intensities, and controlling for several potential confounders, including age, fertility, and socio-economic status (SES). Both ordinary least squares (OLS) and spatial dependency models were used in the analysis. ALAN emerged as a stronger predictor of BC rates in models based on better-resolution VIIRS-DNB estimates (t > 6.035; p < 0.01) than in models based on coarser US-DMSP data (t < 4.196; p < 0.01). |
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0143-1161 |
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LoNNe @ kyba @ |
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1552 |
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Author |
Alabia, I.; Dehara, M.; Saitoh, S.-I.; Hirawake, T. |
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Title |
Seasonal Habitat Patterns of Japanese Common Squid (Todarodes Pacificus) Inferred from Satellite-Based Species Distribution Models |
Type |
Journal Article |
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Year |
2016 |
Publication |
Remote Sensing |
Abbreviated Journal |
Remote Sensing |
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Volume |
8 |
Issue |
11 |
Pages |
921 |
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Keywords |
Remote Sensing; Animals |
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Abstract |
The understanding of the spatio-temporal distributions of the species habitat in the marine environment is central to effectual resource management and conservation. Here, we examined the potential habitat distributions of Japanese common squid (Todarodes pacificus) in the Sea of Japan during a four-year period. The seasonal patterns of preferential habitat were inferred from species distribution models, built using squid occurrences detected from night-time visible images and remotely-sensed environmental factors. The predicted squid habitat (i.e., areas with high habitat suitability) revealed strong seasonal variability, characterized by a reduction of potential habitat, confined off of the southern part of the basin during the winter–spring period (December–May). Apparent expansion of preferential habitat occurred during summer–autumn months (June–November), concurrent with the formation of highly suitable habitat patches in certain regions of the Sea of Japan. These habitat distribution patterns were in response to changes in oceanographic conditions and synchronous with seasonal migration of squid. Moreover, the most important variables regulating the spatio-temporal patterns of suitable habitat were sea surface temperature, depth, sea surface height anomaly, and eddy kinetic energy. These variables could affect the habitat distributions through their impacts on growth and survival of squid, local nutrient transport, and the availability of favorable spawning and feeding grounds. |
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ISSN |
2072-4292 |
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no |
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Call Number |
LoNNe @ kyba @ |
Serial |
1551 |
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Author |
Mendez, N.; Halabi, D.; Spichiger, C.; Salazar, E.R.; Vergara, K.; Alonso-Vasquez, P.; Carmona, P.; Sarmiento, J.M.; Richter, H.G.; Seron-Ferre, M.; Torres-Farfan, C. |
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Title |
Gestational Chronodisruption Impairs Circadian Physiology in Rat Male Offspring, Increasing the Risk of Chronic Disease |
Type |
Journal Article |
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Year |
2016 |
Publication |
Endocrinology |
Abbreviated Journal |
Endocrinology |
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Volume |
157 |
Issue |
12 |
Pages |
4654-4668 |
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Keywords |
Animals |
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Abstract |
Chronic exposure to light at night, as in shift work, alters biological clocks (chronodisruption), impacting negatively pregnancy outcome in human. Actually, the interaction of maternal and fetal circadian systems could be a key factor determining a fitting health in adult. We propose that chronic photoperiod shifts (CPS) during pregnancy, alter maternal circadian rhythms, and impair circadian physiology in the adult offspring, increasing health risks. Pregnant rats were exposed to normal photoperiod (12h-light/12h-dark) or to CSP until 85 gestation. The effects of gestational CPS were evaluated on the mother and adult offspring. In the mother we measured rhythms of heart-rate, body temperature and activity through gestation, and daily rhythms of plasma variables: melatonin, corticosterone, aldosterone and markers of renal function; at 18 days of gestation. In adult offspring, we measured rhythms of clock gene expression in the suprachiasmatic nucleus (SCN), locomotor activity, body temperature, heart rate, blood pressure, plasma variables, glucose tolerance and corticosterone response to adrenocorticotropic hormone (ACTH). CPS altered all maternal circadian rhythms; lengthened gestation and increased newborn weight. The adult CPS offspring presented normal rhythms of clock gene expression in the SCN, locomotor activity and body temperature. However, the daily rhythm of plasma melatonin was absent, and corticosterone, aldosterone, renal markers, blood pressure and heart-rate rhythms were altered. Moreover, CPS offspring presented decreased glucose tolerance and abnormal corticosterone response to ACTH. Altogether, these data shows that gestational CPS induced long-term effects on the offspring circadian system, wherein a normal SCN coexists with altered endocrine, cardiovascular and metabolic function. |
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Laboratory of Developmental Chronobiology, Institute of Anatomy, Histology and Pathology and |
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English |
Summary Language |
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0013-7227 |
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Notes |
PMID:27802074 |
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Call Number |
LoNNe @ kyba @ |
Serial |
1550 |
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