How does the Oura Ring monitor and analyze sleep?

The Oura Ring monitors and analyzes sleep by utilizing a range of advanced sensors to collect physiological data from the user's finger. It is equipped with infrared LEDs that measure blood volume pulse directly from the palmar arteries, a 3D accelerometer and gyroscope that track body movement and orientation, as well as temperature sensors to detect variations in skin temperature. Throughout the night, these components work in harmony to accurately capture the user’s heart rate, heart rate variability (HRV), respiratory rate, and body temperature fluctuations. The ring's sophisticated algorithms then process this data to differentiate between the various sleep stages, including light, deep, and REM sleep, as well as periods of wakefulness. By providing detailed insights into sleep patterns and quality, it aids users in understanding their sleep better and making informed decisions to improve their overall sleep health.