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Photoplethysmography (PPG) is a noninvasive optical method accepted in the clinical use for measurements of arterial oxygen saturation. It is widely believed that the light intensity after interaction with the biological tissue in vivo is modulated at the heartbeat frequency mainly due to pulsatile variations of the light absorption caused by arterial(More)
Long-Term " Agreement on Collaboration in the Field of Remote Sensing of the Earth " has been signed in December 2002 between the Institute of Radioengineering and Electronics (IRE), Russian Academy of Sciences (RAS), and NASA Center for Hydrology, Soil Climatology and Remote Sensing (HSCaRS), Alabama A&M University (AAMU). Among the topics of collaboration(More)
We recently pointed out the important role of dermis deformation by pulsating arterial pressure in the formation of a photoplethysmographic signal at green light. The aim of this study was to explore the role of this novel finding in near-infrared (NIR) light. A light-emitting diode (LED)-based imaging photoplethysmography (IPPG) system was used to detect(More)
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