@article{ref1,
title="Measuring circadian light and its impact on adolescents",
journal="Lighting research and technology",
year="2011",
author="Figueiro, Mg and Brons, Ja and Plitnick, B. and Donlan, B. and Leslie, Rp and Rea, Ms",
volume="43",
number="2",
pages="201-215",
abstract="A field study was conducted with eighth-grade students to determine the impact of morning light on circadian timing, sleep duration and performance. Before and during school hours for a week in February 2009, half the students studied wore orange glasses that minimised the short-wavelength light exposure needed for circadian system stimulation. A control group did not wear the orange glasses. The Daysimeter, a circadian light meter, measured light/dark exposures in both groups for 7 days. Circadian timing was significantly delayed for those students who wore orange glasses compared to the control group. Sleep durations were slightly, but not significantly, curtailed in the orange-glasses group. Performance scores on a brief, standardised psychomotor vigilance test and self-reports of well-being were not significantly different between the two groups.<p />",
language="",
issn="1477-1535",
doi="10.1177/1477153510382853",
url="http://dx.doi.org/10.1177/1477153510382853"
}