Скачать или смотреть How Blue Light Effects Your Eyes and Brain? The Sleep Doctor

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Hi, I'm Dr. Michael Breus, the sleep doctor. I'm a clinical psychologist and board certified sleep specialist. Welcome to Video 4 of my Sleep series, all about getting you quality and restful sleep so that you can be your best. In previous videos I talked about blue light and how recent studies have shown it is devastating to our sleep by disrupting our circadian rhythm, limiting melatonin production and interfering with our body temperature regulation. These results suggest that blue light increases alertness and reduces sleepiness in ways that are detrimental to sleep at night. However, the results also show blue light is beneficial during the waking hours by improving daytime performance and reducing daytime fatigue. What's more, this boost in daytime alertness and decrease in sleepiness due to blue light exposure may actually help improve sleep at bedtime.

Most of the research into the effects of blue light has focused on blue lights capacity to disrupt sleep. But the study I discussed previously is one of the first of its kind to finally explore the possible benefits of blue light to daytime functioning. The convincing results of this blue light study indicates that across all measures, extended exposure to blue light during both day and night resulted in subjects displaying quicker reaction times, higher levels of alertness and greater attention spans and the performance tests. In addition, EEG tests actually showed alterations to brain activity that indicated heightened alertness among people exposed to blue light during the day. These findings indicate that blue light hinders sleep in ways beyond the delayed release of melatonin and alterations to circadian rhythms. Exposure to blue light at night can also spur cognitive function and alertness in very similar to daytime stimulation, a change that can make sleep significantly more difficult to achieve.

Let me be a little less scientific and a little bit more realistic. The number one complaint that I hear from my patients that are having troubles with sleeping is I can't turn off my brain at night. What I have found more often than not is reducing or eliminating exposure to blue light at night helps with this very problem. Cognitive function means you start to think about things as you're going to bed, and that opens up a whole new set of challenges to face when you want to sleep.

To Summarize:
I want to thank you all for joining me again and learning all of the many tools that I have to share. I encourage you to keep watching these videos so you can learn more, sleep better and get the rest you deserve. Remember to subscribe to this channel and tell all your friends about the series so they can also achieve a great night's sleep. This is Dr. Michael Breus. Wishing you sweet dreams.

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