EEG Headband Measures Sleep Directly from the Brain – More Accurately Than a Watch or Ring

A new sleep-monitoring headband reads EEG signals directly from the brain, unlike popular smartwatches and rings that estimate sleep stages using movement and heart rate. Conventional wearables construct a plausible-sounding sleep narrative from indirect data that may not reflect reality. EEG-based measurement offers a more objective picture of actual sleep quality.