Exposure to bright light is associated with positive social interaction and good mood over short time periods: A naturalistic study in mildly seasonal people

Journal of Psychiatric Research
Marije aan het RotS N Young

Abstract

Bright light is used to treat winter depression and might also have positive effects on mood in some healthy individuals. We examined possible links between bright light exposure and social interaction using naturalistic data. For 20 days in winter and/or summer, 48 mildly seasonal healthy individuals wore a light meter at the wrist and recorded in real-time their behaviours, mood, and perceptions of others during social interactions. Possible short-term effects of bright light were examined using the number of minutes, within any given morning, afternoon or evening, that people were exposed to light exceeding 1000 lux (average: 19.6min). Social interactions were labelled as having occurred under conditions of no, low or high bright light exposure. Independent of season, day, time, and location, participants reported less quarrelsome behaviours, more agreeable behaviours and better mood when exposed to high but not low levels of bright light. Given that the effects were seen only when exposure levels were above average, a minimum level of bright light may be necessary for its positive effects to occur. Daily exposure levels were generally low in both winter and summer. Spending more time outdoors and improving indoor lighting m...Continue Reading

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Citations

Nov 3, 2012·International Archives of Occupational and Environmental Health·Veronika KretschmerBarbara Griefahn
Aug 26, 2011·Journal of Psychiatry & Neuroscience : JPN·Simon N Young
Mar 7, 2012·Chronobiology International·Jeanne Sophie MartinLuc Laberge
Jun 22, 2007·European Neuropsychopharmacology : the Journal of the European College of Neuropsychopharmacology·Marije aan het RotSimon N Young
Jun 8, 2010·Transplant International : Official Journal of the European Society for Organ Transplantation·Claudio PonticelliUNKNOWN CETRA Study Group
May 4, 2010·Journal of Personality·D S Moskowitz
Mar 13, 2014·British Journal of Psychology·Marije Aan Het RotSimon N Young
Jul 23, 2013·PloS One·Danilo E F L FlôresVeronica S Valentinuzzi
Sep 14, 2018·Journal of Circadian Rhythms·Mathias AdamssonTakeshi Morita
Nov 22, 2013·Applied Psychology. Health and Well-being·Femke Beute, Yvonne A W de Kort
Mar 14, 2019·Annals of Work Exposures and Health·Stine DaugaardHenrik Albert Kolstad
May 6, 2019·Annals of Work Exposures and Health·Anne VestedHenrik Albert Kolstad
Jul 2, 2019·International Journal of Epidemiology·Luke L A PriceAgnieszka Wolska
Feb 18, 2021·Journal of Intellectual Disability Research : JIDR·M N BöhmerD A M Festen

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