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 ...
Optical sensors represent the most common type of biosensor. This two-part series provides a technical background on how optical techniques are used for bioanalytical applications. This article ...
Watches that provide heart-rate monitoring look similar look to their analog or mechanical counterparts. All of these devices have familiar watch faces and wrist bands. However, inside the digital ...
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