Photoplethysmography is a key sensing technology which is used in wearable devices such
as smartwatches and fitness trackers. Currently, photoplethysmography sensors are used to …

Wearable electronics have modernized how physiological indicators are measured, and
their potential for biomedical applications has risen. The extensive deployment of flexible …

This chapter presents the fundamental signal processing techniques used to analyze the
PPG signal. The chapter starts by providing an overview of the PPG signal, covering its …

Lab research might benefit from the advantages of wearable devices, such as their ease of
use, to estimate pulse rate (PR) and pulse rate variability (PRV) as an equivalent for heart …

Abstract Objective Pulse Rate Variability (PRV) has been widely used as a surrogate of
Heart Rate Variability (HRV). However, there are several technical aspects that may affect …

We aimed to explore the association between occupational noise exposure duration and
heart rate variability (HRV) and the underlying mechanism. A total of 449 subjects in a …

Photoplethysmography is an optical technique that produces a wealth of information about
cardiovascular health. Therefore, the technology has become an integral part of personal …

Pulse rate variability (PRV) describes the changes in pulse rate through time, when
measured using pulsatile signals such as photoplethysmograms (PPG). PRV has been used …

Background: Heart rate variability (HRV) and pulse rate variability (PRV) measures are two
kinds of physiological indices that can be used to evaluate the autonomic nervous function …

Excessive blood loss during emergency trauma or clinical surgery can lead to shock or even
death. Accurate identification of blood loss can seize treatment opportunities and thus …