The sensors

Written by Jonathan
Last update


Your Dreem Band is equipped with several sensors:

  • 6 EEG electrodes (4 frontal electrodes and 2 rear electrodes). Thanks to these sensors (also known as electro-encephalograms or EEGs) Dreem can measure your brain waves, this is essential to accurate sleep tracking. The rear electrodes, custom designed for Dreem, were created to achieve good measurement even through thick hair.
  • A pulse oximeter that enables us to monitor your heart rate and blood oxygen saturation.
  • An accelerometer to measure movement and breathing patterns.

These sensors, alongside our machine-learning algorithms have been shown to identify sleep stages the same ways as a polysomnography (or PSG) recording, according to sleep experts.