PMID: 9181437Jun 1, 1997Paper

The effects of evening bright light on next-day sleep propensity

Journal of Biological Rhythms
O Tzischinsky, P Lavie

Abstract

The present study investigated the effects of evening bright light (BL) compared to dim light (DL) on next-day sleep propensity as well as the acrophase of oral temperature and mood scores. A total of 12 male subjects (mean age 23.5 +/- 2.6 years) were exposed to 2 h of evening DL or BL 30 min after sunset for 5 consecutive days. The experimental period started after the 5th day of exposure. After light exposure, subjects remained awake in the sleep laboratory until 07:00 h, when they began the 7/13 ultrashort sleep-wake paradigm, which continued for 24 h until 07:00 h the next day. Oral temperature was measured hourly. The results showed that evening exposure to BL, in comparison to DL, significantly delayed the next-day sleep gate as well as the acrophase of the oral temperature curve and the acrophase of negative mood. The effects of BL on the next-day distribution of sleep stages showed an increase of Stage 2 and less REM (rapid eye movement) during the morning. The results indicate that sleep propensity is regulated by a circadian pacemaker that is responsive to evening BL exposure.

References

Nov 25, 1991·Neuroscience Letters·D S MinorsA Wirz-Justice
May 3, 1990·The New England Journal of Medicine·C A CzeislerR E Kronauer
May 1, 1986·Electroencephalography and Clinical Neurophysiology·P Lavie
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Jul 1, 1981·Archives of General Psychiatry·E D WeitzmanC P Pollak
Jan 1, 1994·Journal of Biological Rhythms·M E JewettC A Czeisler
Oct 1, 1994·Sleep·O Tzischinsky, P Lavie
Mar 1, 1996·Journal of Sleep Research·L C Lack, K Lushington

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Citations

Jan 12, 2008·Journal of Circadian Rhythms·Girardin Jean-LouisArthur H Wolintz
Jan 10, 2001·Annual Review of Psychology·P Lavie
May 3, 2013·PloS One·Roni G AlderRichard J Linscott
Nov 5, 2015·PloS One·Gaétane DeliensMikhail Kissine
Nov 15, 2013·PloS One·Madhu N RaoUNKNOWN Osteoporotic Fractures in Men (MrOS) Study Group
Jan 15, 2005·Sleep Medicine Reviews·Cameron J van den HeuvelDrew Dawson
Sep 16, 2006·Sleep Medicine Reviews·Phyllis C Zee, Prasanth Manthena

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