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2. Ganzfeld experiment - Wikipedia

   en.wikipedia.org/wiki/Ganzfeld_experiment

   In a typical ganzfeld experiment, a "receiver" is placed in a room relaxing in a comfortable chair with halved ping-pong balls over the eyes, having a red light shone on them. The receiver also wears a set of headphones through which white or pink noise (static) is played. The receiver is in this state of mild sensory deprivation for half an hour.

3. Sleep Doctors Say *This* Is The Best Temperature for Sleep - AOL

   www.aol.com/sleep-doctors-best-temperature-sleep...

   The best way to prep your sleep space is simply to set your thermostat to the optimal sleeping temperature 60 to 67° F about an hour or so before bed, says Dr. Paul Harris. However, there are a ...

4. Ganzfeld effect - Wikipedia

   en.wikipedia.org/wiki/Ganzfeld_effect

   The visual effect is described as the loss of vision as the brain cuts off the unchanging signal from the eyes. The result is "seeing black", [ citation needed ] an apparent sense of blindness. A flickering ganzfeld causes geometrical patterns and colors to appear, and this is the working principle for mind machines and the dream machine .

5. 8 Headphones You Can Comfortably Wear to Sleep - AOL

   www.aol.com/8-headphones-comfortably-wear-sleep...

   Ahead, eight versions of sleep headphones that are doing it best, depending on your sleep and ear needs. Download a 12-hour long brown noise playlist and call it a night. Sleep Headphones

6. Biological effects of high-energy visible light - Wikipedia

   en.wikipedia.org/wiki/Biological_effects_of_high...

   Blue light, a type of high-energy light, is part of the visible light spectrum. High-energy visible light (HEV light) is short-wave light in the violet/blue band from 400 to 450 nm in the visible spectrum, which has a number of purported negative biological effects, namely on circadian rhythm and retinal health (blue-light hazard), which can lead to age-related macular degeneration.

7. Blue light-blocking glasses don't protect eyes or improve ...

   www.aol.com/news/blue-light-blocking-glasses...

   The glasses, which sellers claim protect the eyes from potentially harmful blue light coming from screens, first hit the scene in the early 2000s. Search interest skyrocketed in the first year of ...