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 powe…
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.
accelerometry sleep staging wearable devices apple watch instantaneous heart rate
Published: May 12, 2026. Version: 1.0.0