Resources
Software Open Access
Estimating Activity from Instantaneous Heart Rate
Using only a heart rate time series, it is possible to measure a number of features that reflect the level of physical activity. Here we provide software for deriving an "activity index" based on measurements of mean heart rate, total power of the i…
Published: April 18, 2002. Version: 1.0.0
Database Open Access
A Multi-Night Instantaneous Heart Rate and Accelerometry Dataset with EEG Sleep Stage Labels
This dataset contains multi-night recordings of instantaneous heart rate (IHR) and 3-axis accelerometry from the Apple Watch, paired with EEG-based sleep stage labels from the Dreem 2 headband.
sleep staging wearable devices apple watch accelerometry instantaneous heart rate
Published: Sept. 25, 2026. Version: 1.0.1