Time-frequency distribution of heart rate variability below 0.05 Hz by Wigner-Ville spectral analysis in congestive heart failure patients

Hsiao Lung Chan, Jiunn Lee Lin, Chao Chen Du, Chien Ping Wu

Research output: Contribution to journalArticle

7 Citations (Scopus)


The Wigner-Ville spectral analysis was utilized to demonstrate a high- resolution time-frequency distribution of heart rate variability below 0.05 Hz. There are different time-frequency characteristics between the normal subject and the patient with severe congestive heart failure. The former consists of multiple and broad-band spectral peaks, while the latter presents unique spectral peaks. Based on Bayes theory, a classifier for the unique spectral peaks was developed. After the beneficial improvement with low-dose beta-blockers, the unique spectral peaks had disappeared or the time of occurrence was reduced in most patients.

Original languageEnglish
Pages (from-to)581-587
Number of pages7
JournalMedical Engineering and Physics
Issue number6
Publication statusPublished - Sep 1 1997
Externally publishedYes



  • Congestive heart failure
  • Heart rate variability
  • Time-frequency analysis

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering

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