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RPI: News & Events – Light From Self-Luminous Tablet Computers Can Affect Evening Melatonin, Delaying Sleep

New LRC research can aid in the development of “circadian-friendly” electronic devices

A new study from the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute shows that a two-hour exposure to electronic devices with self-luminous “backlit” displays causes melatonin suppression, which might lead to delayed bedtimes, especially in teens.

The research team, led by Mariana Figueiro, associate professor at Rensselaer and director of the LRC’s Light and Health Program, tested the effects of self-luminous tablets on melatonin suppression. In order to simulate typical usage of these devices, 13 individuals used self-luminous tablets to read, play games, and watch movies. Results of the study, titled “Light level and duration of exposure determine the impact of self-luminous tablets on melatonin suppression,” were recently published in the journal Applied Ergonomics.

“Our study shows that a two-hour exposure to light from self-luminous electronic displays can suppress melatonin by about 22 percent. Stimulating the human circadian system to this level may affect sleep in those using the devices prior to bedtime,” said Figueiro.

via RPI: News & Events – Light From Self-Luminous Tablet Computers Can Affect Evening Melatonin, Delaying Sleep.

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Lutz Siemer

Lutz Siemer

Education, Research & Development in Social Work & IT After working as an alternative practitioner and psychotherapist in private practice for nearly ten years I stepped over to higher education in 2005. At Saxion University of Applied Sciences I lecture and do research and development in the area of Social Work, Psychology and IT. Currently I'm focussing on merging mobile technology and social work.

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