Motion and heart rate from a wrist-worn wearable and labeled sleep from polysomnography

This project contains acceleration (in units of _g_ ) and heart rate (bpm,
measured from photoplethysmography) recorded from the Apple Watch, as well as
labeled sleep scored from gold-standard polysomnography. Data were collected
at the University of Michigan from June 2017 to March 2019, and there are 31
subjects in total. Code to read and process these files is available on
GitHub. The paper corresponding to the work is Walch et al., "Sleep stage
prediction with raw acceleration and photoplethysmography heart rate data
derived from a consumer wearable device", SLEEP (2019).