# Assessment of Vigilance Level during Work: Fitting a Hidden Markov Model to Heart Rate Variability

> Research article (Brain Sciences, 2023) · cited 15× · AI/ML

**Wikidata**: [openalex:W4363673194](https://www.wikidata.org/wiki/openalex:W4363673194)  
**Source**: https://4ort.xyz/entity/assessment-of-vigilance-level-during-work-fitting-a-hidden-markov-model-to-heart-rate-variability