Beyond its use in a clinical environment, photoplethysmogram (PPG) is increasingly used for
measuring the physiological state of an individual in daily life. This review aims to examine …

The development of big data technologies, which have been applied extensively in various
areas, has become one of the key factors affecting modern society, especially in the virtual …

Background Photoplethysmography is a noninvasive and low-cost method to remotely and
continuously track vital signs. The Oura Ring is a compact photoplethysmography-based …

This article investigates electrocardiogram (ECG) acquisition artifacts often occurring in
experiments due to human negligence or environmental influences, such as electrode …

Pregnancy is a unique time when many mothers gain awareness of their lifestyle and its
impacts on the fetus. High-quality care during pregnancy is needed to identify possible …

Background: Heart rate variability (HRV) is a noninvasive method that reflects the regulation
of the autonomic nervous system. Altered HRV is associated with adverse mental or physical …

Monitoring people's stress levels has become an essential part of behavioural studies for
physical and mental illnesses conducted within the biopsychosocial framework. There have …

Mounting clinical evidence suggests that viral infections can lead to detectable changes in
an individual's normal physiologic and behavioral metrics, including heart and respiration …

Photoplethysmography (PPG) is a non-invasive technique used in wearable devices to
measure vital signs (eg, heart rate). The method is, however, highly susceptible to motion …

Photoplethysmography is a method to visualize the variation in blood volume within tissues
with light. The signal obtained has been used for the monitoring of patients, interpretation for …