# rapid eye movement sleep

> unique phase of sleep in mammals and birds, characterized by random/rapid movement of the eyes

**Wikidata**: [Q211402](https://www.wikidata.org/wiki/Q211402)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Rapid_eye_movement_sleep)  
**Source**: https://4ort.xyz/entity/rapid-eye-movement-sleep


## References

1. Freebase Data Dumps. 2013
2. Integrated Authority File
3. YSO-Wikidata mapping project
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)