![]() We’ve established that a flickering screen right in front of your face may affect your sleep, but there’s also the matter of sound. How sounds from your TV affect your sleep ![]() “You’re probably getting less exposure to light from a TV that’s across the room rather than a tablet that’s in front of your face,” Dr. However, your proximity to your screen can definitely have an impact here. You could also wake up due to the flashes of light themselves. Your eyelids are made of a thin enough material that this can definitely put you at risk of suppressing the melatonin secretion you need to sleep soundly, Dr. you get those flashes of light, it’s getting through your eyelid,” Donald Greenblatt, M.D., director of the University of Rochester Medicine Sleep Center, tells SELF. What about when you’re actually sleeping? “As long as. What’s more, the light from our tech devices has short wavelengths that make it appear somewhat blue, and some experts believe this “blue light” is particularly good at suppressing melatonin production. For context, a 2012 analysis of TVs with automatic brightness controls conducted by the United States Department of Energy found that most TV viewing occurs at less than 50 lux, so somewhere in between the two extremes posed in The Journal of Clinical Endocrinology & Metabolism study. While the study didn’t explicitly mention TV brightness, the researchers looked at participants living in room light up to 200 lux (the measurement of light intensity), while dim light was less than 3 lux. The researchers found that when compared to dim light, exposure to indoor electrical lighting (also called room light) between dusk and bedtime suppressed melatonin production to some extent in about 99 percent of the participants. This is why those who are experiencing insomnia are sometimes told to limit bright light as they’re trying to prepare their bodies for sleep.Ī 2011 study published in The Journal of Clinical Endocrinology & Metabolism looked at artificial light exposure before bedtime in 116 people with no diagnosed sleep disorders. Thanks to the wonders of modern technology, that’s not super realistic, but the light/sleep tug of war can be very real for some people. ![]() “We're not supposed to be exposed to any artificial light at night, period,” Dianne Augelli, M.D., a fellow of the American Academy of Sleep Medicine and an assistant professor of Medicine at Weill Medical College of Cornell University, tells SELF. ![]()
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