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(1-1) Adapted from Groeger et al., ‘Sleep quantity, sleep
difficulties and their perceived consequences in a representative sample of
some 2000 British adults’, Journal of Sleep
Research, 2004, 13 (4): 359–71. Reproduced by permission of
John Wiley and Sons.
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(2-4) Adapted from Figure 1 in Dijk and Lockley, ‘Integration
of human sleep-wake regulation and circadian rhythmicity’, Journal of Applied Physiology, 2002, 92 (2):
852–62.
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(5-1) Kleitman and Englemann, ‘Sleep characteristics of
infants’, Journal of Applied Physiology,
1953, 6: 269–82.
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(6-1) Left panel: Adapted from D. J. Dijk and C. A. Czeisler,
‘Contribution of the circadian pacemaker and the sleep homeostat to sleep
propensity, sleep structure, electroencephalographic slow waves, and sleep
spindle activity in humans,’ Journal of
Neuroscience, 1995, 15(5pt1): 3526–38; Right panel: Adapted
from C. Cajochen, S. B. Khalsa, J.
K. Wyatt, C. A. Czeisler, D. J. Dijk, ‘EEG and ocular correlates of
circadian melatoniphase and human performance decrements during sleep loss’,
American Journal of Physiology, 1999,
277 (3pt2): R640-9.
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(6-2) Adapted from Figure 1 in Arendt and Skene, ‘Melatonin as
a chronobiotic’, Sleep Medicine Reviews,
2005, 9 (1): 25–39. With permission from Elsevier.
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(8-1) Panel a: Adapted from Figure 1 in Dawson and Reid,
‘Fatigue, alcohol and performance impairment’, Nature, 1997, 388 (6639): 235. Reprinted by permission from
Macmillan Publishers Ltd. Panel b: Adapted from US Federal Motor Carrier
Safely Administration, Department of Transportation ‘Hours of service of
drivers: Driver rest and sleep for safe operations’
(2002).
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(8-2) Adapted from Figures 1, 2, 4, and 5 in Folkard and
Lombardi, ‘Modeling the impact of the components of long work hours on
injuries and “accidents”’, American Journal of
Industrial Medicine, 2006, 49(11): 953–63. Reproduced by
permission from John Wiley and Sons.
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(9-1) Adapted from Figure 11 in Lockley, ‘Circadian
rhythms: Influence of light in
humans’, Encyclopaedia of Neuroscience,
2009, pp. 971–86. With permission from Elsevier.
