Evening exposure to a light emitting diodes ( LED ) - backlit computer screen 1 affects circadian physiology and cognitive performance 2 3 4
نویسندگان
چکیده
1 Centre for Chronobiology, Psychiatric Hospitals of the University of Basel, Wilhelm Kleinstr. 27, 10 4012 Basel, Switzerland 11 12 2 Competence Team Visual Technologies, Fraunhofer IAO/University Stuttgart IAT 13 Nobelstr. 12, 70569 Stuttgart, Germany 14 15 3 Center for Applied Technologies in Neuroscience-Basel, Psychiatric Hospitals of the University of 16 Basel, Wilhelm Kleinstr. 27, 4012 Basel, Switzerland 17 18 19 20 21 22 23 24 25 26 27 28 29 Running Title: Computer screen and circadian and cognitive physiology 30 31 32 33 Corresponding author: 34 Christian Cajochen, PhD 35 Centre for Chronobiology 36 Psychiatric Hospital of the University of Basel, 37 Wilhelm Kleinstr. 27 38 CH-4012 Basel, Switzerland 39 Tel.: +41613255318 40 Fax: +41613255556 41 Email: [email protected] 42 Web: www.chronobiology.ch 43 44
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Evening exposure to a light-emitting diodes (LED)-backlit computer screen affects circadian physiology and cognitive performance.
Many people spend an increasing amount of time in front of computer screens equipped with light-emitting diodes (LED) with a short wavelength (blue range). Thus we investigated the repercussions on melatonin (a marker of the circadian clock), alertness, and cognitive performance levels in 13 young male volunteers under controlled laboratory conditions in a balanced crossover design. A 5-h eveni...
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