# Transfer learning from ECG to PPG for improved sleep staging from wrist-worn wearables

> Research article (Physiological Measurement, 2021) · cited 51× · AI/ML

**Wikidata**: [openalex:W3137901888](https://www.wikidata.org/wiki/openalex:W3137901888)  
**Source**: https://4ort.xyz/entity/transfer-learning-from-ecg-to-ppg-for-improved-sleep-staging-from-wrist-worn-wearables