Time-frequency analysis of 24-hour heart rate fluctuation for the characterization of very low-frequency component

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

研究成果: 雜誌貢獻Conference article同行評審

摘要

A smooth pseudo Wigner-Ville distribution was employed to investigate both time and frequency characteristics in very low-frequency component (less than 0.04 Hz) of 24-hour heart rate fluctuation. In some of heart failure, we could see remarkable and very low-frequency oscillations on the Wigner-Ville distribution, which are related to Cheyne-Stokes respiration. However, the Wigner-Ville distribution of normal subjects had not such oscillations, but more random spectral characteristics instead. Furthermore, we calculated 1/fα regression slopes of average spectrum to be a crude estimate of fractal dimensions. The slopes are more negative in heart failure than normal (-1.866 ± 0.888 vs. -0.957 ± 0.180 p < 0.005), which associates a loss of dimensionality of heart rate fluctuation in heart failure.
原文英語
頁(從 - 到)1250-1251
頁數2
期刊Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
16
發行號pt 2
出版狀態已發佈 - 十二月 1 1994
對外發佈
事件Proceedings of the 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 (of 2) - Baltimore, MD, USA
持續時間: 十一月 3 1994十一月 6 1994

ASJC Scopus subject areas

  • 訊號處理
  • 生物醫學工程
  • 電腦視覺和模式識別
  • 健康資訊學

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