Getting "a good night's sleep" is a phrase we are all familiar with. Sleep and its "quality" are things many of us struggle with. Sleep is a hugely studied research topic. Just typing "sleep" as a ...
In 1932, the inventor Alois Benjamin Saliger patented the Psycho-phone, a phonograph hooked up to a timer which could play recordings while a person was asleep. The audio could be heard at his dimly ...
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