![]() Searching for reviews led me to the Dreem headset that had similar features and a $499 price tag. ![]() I only found a single comprehensive review of it which was negative. Plus it was sold out on their website and I couldn't find any used ones for sale. I'm still curious about the Dreem headset, if anybody can share their firsthand opinions from actually using one. I found a slightly used SmartSleep headband on Ebay and bought it! Philips sells them directly for $399.99 and I paid $300. Philips products are pricey but they have a good reputation, so hopefully I didn't make an expensive mistake.Īnyway, I'd like to hear about other people's experience with this device. I'll share my impressions of it as soon as it arrives and I have a full night's sleep wearing it.Before the development of brain wave sensors, scientists barely knew what the brain does when it sleeps. To this day, sleep is an evolutionary and physiological conundrum, although a clear relationship is now recognised between lack of rest and the onset of disease, as well as reduced life expectancy. Today, neurotechnology startups are attempting to take the relationship between sleep and tech to the next level, using bidirectional interfaces that not only read the brain, but also try to manipulate it while it rests.įor decades, scientists assumed that the human brain switches off to preserve energy when it isn’t awake, like a household appliance on standby. During the 50s, researcher Eugene Aserinsky rigged his own son, aged eight, to an old brainwave sensor while he slept. ![]() The curvy lines traced by the device’s pens on the graph paper showed a pattern of neuronal activity consistent with that of a fully active brain. That was how Aserinsky discovered REM (rapid eye movement) sleep, a phase during which we dream while the mind orders thoughts and consolidates memory. Polysomnography is a medical study of sleep that uses brain wave sensors. The biological reason for sleep is still unknown. In 2010, Aserinsky’s fellow sleep researcher, William Dement, who had already retired, joked: “As far as I know, the only reason we need to sleep that is really, really solid is because we get sleepy.” However, what we do know about the process, we know thanks to neurotechnology. Use of electroencephalography (EEG) first, and then modern neuroimaging techniques like positron emission tomography and functional magnetic resonance imaging, have revealed how the brain behaves while we sleep, which is an important clue for why we sleep at all.
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