PPGsignaalin

PPGsignaalin refers to the photoplethysmography (PPG) signal, which is a non-invasive optical technique used to measure the volumetric changes of blood in the microvascular bed of tissue. This technique works by shining a light, typically red or infrared, onto the skin and measuring the amount of light that is absorbed or reflected. As blood flows through the vessels, the amount of light absorbed or reflected changes due to the pulsatile nature of blood flow. This change in light intensity is then converted into an electrical signal, forming the PPG waveform.

The PPG signal is commonly used to derive various physiological parameters. The most well-known application is the estimation of heart rate and blood oxygen saturation (SpO2), as seen in pulse oximeters. Variations in the PPG waveform can also provide insights into other cardiovascular parameters such as blood pressure variability, stroke volume, and even the presence of certain arrhythmias. The signal is influenced by factors such as tissue optical properties, ambient light, motion artifacts, and the characteristics of the PPG sensor itself. Researchers and clinicians utilize PPGsignaalin for continuous monitoring in diverse settings, including hospitals, wearable devices for fitness tracking, and remote patient monitoring systems. Understanding the characteristics and potential artifacts of the PPG signal is crucial for accurate interpretation and reliable physiological measurements.