Sleep stage classification by a combination of actigraphic and heart rate signals

Emi Yuda, Yutaka Yoshida, Ryujiro Sasanabe, Haruhito Tanaka, Toshiaki Shiomi, Junichiro Hayano

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Although heart rate variability and actigraphic data have been used for sleep-wake or sleep stage classifications, there are few studies on the combined use of them. Recent wearable sensors, however, equip both pulse wave and actigraphic sensors. This paper presents results on the performance of sleep stage classification by a combination of heart rate and actigraphic signals. We studied 40,643 epochs (length 3 min) of polysomnographic data in 289 subjects. A combined model, consisting of autonomic functional indices from heart rate variability and body movement indices derived from actigraphic data, discriminated non-rapid-eye-movement (REM) sleep from waking/REM sleep with 76.9% sensitivity, 74.5% specificity, 75.8% accuracy, and a Cohen’s kappa of 0.514. The combination was also useful for discriminating between REM sleep and waking at 77.2% sensitivity, 72.3% specificity, 74.5% accuracy, and a kappa of 0.491.

Original languageEnglish
Article number28
JournalJournal of Low Power Electronics and Applications
Issue number4
Publication statusPublished - 2017 Dec
Externally publishedYes


  • Actigraphy
  • Heart rate variability
  • Polysomnography
  • Sleep
  • Sleep stage

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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