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Author Paul, M.A.; Love, R.J.; Hawton, A.; Brett, K.; McCreary, D.R.; Arendt, J. url  doi
openurl 
  Title Sleep deficits in the high Arctic summer in relation to light exposure and behaviour: use of melatonin as a countermeasure Type Journal Article
  Year 2015 Publication Sleep Medicine Abbreviated Journal Sleep Medicine  
  Volume Issue Pages  
  Keywords Human Health; Sleep  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1389-9457 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial (up) 1093  
Permanent link to this record
 

 
Author Middleton, B.; Arendt, J.; Stone, BM url  openurl
  Title Human circadian rhythms in constant dim light (8 lux) with knowledge of clock time Type Journal Article
  Year 1996 Publication Journal of Sleep Research Abbreviated Journal J. Sleep Res.  
  Volume 5 Issue 2 Pages 69-76  
  Keywords Human Health; circadian rhythm; light/dark cycle; melatonin; entrainment; melatonin levels; 6-sulphatoxymelatonin  
  Abstract The light/dark (L/D) cycle is a major synchronizer of human circadian rhythms. In the absence of a strong L/D cycle, synchrony with 24 hours can nevertheless be maintained in a socially structured environment, as shown in Polar regions (Broadway et al. 1987) and by some blind subjects (Czeisler et al. 1995a). The relative contribution of other time cues to entrainment in dim light has not been fully explored. The present study investigated the behaviour of melatonin (assessed as 6-sulphatoxymelatonin); rectal temperature; activity and sleep (actigraphy and logs) in constant dim light (L/ L) with access to a digital clock. 6 normal healthy males were maintained as a group in partial temporal isolation with attenuated sound and ambient temperature for 21 days. All 6 subjects showed free-running periodicity for 6-sulphatoxymelatonin and 5/6 subjects for temperature, activity and sleep offset. The average period (tau) was 24.26 +/- 0.049, substantially shorter than in previous experiments with a self selected L/D cycle but similar to a recent study conducted in very dim light. One subject maintained a rigid sleep/wake cycle throughout whilst his 6-sulphatoxymelatonin rhythm free-ran. Total sleep time, from actigraph data, did not change but sleep efficiency decreased during the experiment. The subjects did not show group synchronization. These results confirm previous data indicating the importance of the L/D cycle in human entrainment and underline the lesser role of social cues and knowledge of clock time. This particular approach will permit the administration of timed medication to sighted humans under free-running conditions.  
  Address  
  Corporate Author Thesis  
  Publisher Wiley Place of Publication Editor  
  Language Summary Language Original Title  
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  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial (up) 1098  
Permanent link to this record
 

 
Author Komada, Y.; Aoki, K.; Gohshi, S.; Ichioka, H.; Shibata, S. url  doi
openurl 
  Title Effects of television luminance and wavelength at habitual bedtime on melatonin and cortisol secretion in humans: Blue light and melatonin secretion Type Journal Article
  Year 2015 Publication Sleep and Biological Rhythms Abbreviated Journal Sleep and Biological Rhythms  
  Volume 13 Issue 4 Pages 316–322  
  Keywords Human Health  
  Abstract The aim of this study was to examine the effect of exposure to different types of television displays at habitual bedtime on human melatonin and cortisol secretion. Thirteen male participants (mean age: 22.7 ± 0.85 years) were tested over three nights in one baseline and two experimental sessions. Participants were instructed to watch a movie on four different luminance- and wavelength-controlled television displays: normal luminance (450 candela [cd]/m2) or high luminance (1200 cd/m2) and normal blue light or half blue light. Salivary melatonin and cortisol levels were measured at two time points before and after television viewing. There was no significant difference in cortisol secretion due to the different displays. Melatonin suppression was significantly lower following the exposure to the half-blue light display compared with the normal blue light display. These results suggest that the use of half-blue light displays during night time may prevent circadian rhythm dysfunction.  
  Address  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1446-9235 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial (up) 1149  
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Author Crowley, S.J.; Suh, C.; Molina, T.A.; Fogg, L.F.; Sharkey, K.M.; Carskadon, M.A. url  doi
openurl 
  Title Estimating the dim light melatonin onset of adolescents within a 6-h sampling window: the impact of sampling rate and threshold method Type Journal Article
  Year 2015 Publication Sleep Medicine Abbreviated Journal Sleep Medicine  
  Volume 20 Issue Pages 59-66  
  Keywords Human Health  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1389-9457 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial (up) 1324  
Permanent link to this record
 

 
Author WDS Killgore url  doi
openurl 
  Title Lighting the Way to Better Sleep and Health Type Journal Article
  Year 2016 Publication Journal of Sleep Disorders: Treatment and Care Abbreviated Journal J Sleep Disor: Treat Care  
  Volume 05 Issue 01 Pages  
  Keywords Health; Editorial  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2325-9639 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kyba @ Serial (up) 1442  
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