![]() ![]() ![]() From motion and heart rate data combined we can develop algorithms that get close to what an electrode sensor would detect when it comes to our brainwaves. Dan Gartenberg, a sleep scientist and the CEO of SleepSpace, which offers both a sleep-tracking app and a “ Smart Bed Platform ,” explains, “Devices like Apple Watch, Oura, and Fitbit use something called Photoplethysmography ( PPG) to measure your heart rate. There are a bunch of externally developed apps you can download to try and get data on your sleep cycles, and they all have their own ways to collect and quantify data with varying degrees of success and accuracy.ĭr. ![]() According to a press release from Apple, “Using signals from the accelerometer and heart rate sensor, Apple Watch can detect when users are in REM, Core, or Deep sleep.”Ĭurrently, your Apple Watch can kind of guess how much you’ve slept if you turn on “Sleep Focus,” based on how much you move around while you sleep. #Apple sleep tracker update#Buried in this deluge of data was news about an update to the Apple Watch’s operating system that will track the wearer’s sleep in a more granular way. At this year’s Apple Worldwide Developers Conference, CEO Tim Cook and other bigwigs unveiled all sorts of new tech goodies, from redesigned laptops to the next generation of operating systems for its computers, tablets, and smartphones. ![]()
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