In an era of fitbits, smartwatches and earbuds, new research headed by SMU Assistant Professor Dong Ma aims to unleash the potential of photoplethysmography for wearable healthcare. SMU Office of ...
Pulse oximeters, a type of photoplethysmography (PPG) sensor, are electronic devices that measure a person’s blood-oxygen saturation (SpO 2) and heart-rate (HR) levels. Since their inception in the ...
Light sensors used to track heart rate in wearable devices like the Apple Watch Series 5 and the Fitbit Versa 2 don’t work as well on darker skin or people with obesity, according to modeling done in ...
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