![]() ![]() 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. 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. The biological reason for sleep is still unknown. Polysomnography is a medical study of sleep that uses brain wave sensors. ![]() That was how Aserinsky discovered REM (rapid eye movement) sleep, a phase during which we dream while the mind orders thoughts and consolidates memory. ![]() 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. During the 50s, researcher Eugene Aserinsky rigged his own son, aged eight, to an old brainwave sensor while he slept. 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. 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. #Philips smartsleep vs dreem 2 fullI'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. 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 found a slightly used SmartSleep headband on Ebay and bought it! Philips sells them directly for $399.99 and I paid $300. I'm still curious about the Dreem headset, if anybody can share their firsthand opinions from actually using one. #Philips smartsleep vs dreem 2 plusPlus it was sold out on their website and I couldn't find any used ones for sale. I only found a single comprehensive review of it which was negative. Searching for reviews led me to the Dreem headset that had similar features and a $499 price tag. It seems to have just hit the market and the only comprehensive review I could find from anybody who had used one was by Redditor u/joel_jensen and he really liked it. Then yesterday I discovered the Philips SmartSleep headband which is a professionally produced version of what I was hoping to make. However, my lack of Arduino/etc knowledge meant that it was going to take months of classes and a lot of help from more experienced makers before I had any progress. I've joined a makerspace and have dreamed of making a device like the one the researchers used in their study. The above research determined that "Stimulation out of phase with the ongoing slow oscillation rhythm remained ineffective" which explains why my primitive attempts to do this were a failure. Years earlier I had tried this in a crude way with no success by playing various low frequency binaural beats into earphones while I slept. Around six months ago I stumbled on this article: Auditory Closed-Loop Stimulation of the Sleep Slow Oscillation Enhances Memory I've been struggling to increase my slow wave sleep for about a decade. ![]()
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