In the last decades, photoplethysmography (PPG) has been used as a noninvasive
technique for monitoring arterial oxygen saturation by pulse oximetry (PO), whereas near …

Remotely measuring the arterial blood oxygen saturation (SpO 2) in visible light (Vis)
involves different probing depths, which may compromise calibratibility. This paper assesses …

Driver drowsiness is a significant factor in road crashes. However, existing solutions for
driver drowsiness detection have major drawbacks of requiring special hardware …

Photoplethysmography (PPG) is an optical technique that measures blood volume
variations. The main application of dual-wavelength PPG is pulse oximetry, in which the …

With the continued development and rapid growth of wearable technologies, PPG has
become increasingly common in everyday consumer devices such as smartphones and …

Pulse oximeters rely on the technique of photoplethysmography (PPG) to estimate arterial
oxygen saturation (SpO _2 2). In conditions of poor peripheral perfusion such as …

The suitability of different methods of finding the foot point of a pulse as measured using
earlobe photoplethysmography during stationary conditions was investigated. Instantaneous …

In this paper, we present the design, development, and validation of amodular
photoplethysmography (PPG) system called ZenPPG. This portable, dual-channel system …

For the last two decades, pulse oximetry has been used as a standard procedure for
monitoring arterial oxygen saturation (SpO 2). However, SpO 2 measurements made from …

A hand-elevation study was carried out in the laboratory in order to alter peripheral blood
flow with the aim of increasing understanding of factors affecting the morphology of …