Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지

"A study on the Time-Frequency Algorithm to estimate time-varying Power Spectrum of Heart Rate Variability Signals"

심박변동신호의 시변파워스펙트럼 추정을 위한 Time-Frequency 알고리즘에 관한연구

  • Park, C.S. (Department of Electrical Engineering, College of Engineering, Yonsei University) ;
  • Lee, J.W. (Department of Electrical Engineering, College of Engineering, Yonsei University) ;
  • Lee, J.Y. (Department of Electrical Engineering, College of Engineering, Yonsei University) ;
  • Kim, J.S. (Division of Cardiology, Cardiovascular Institute, Samsung Medical Center) ;
  • Lee, M.H. (Department of Electrical Engineering, College of Engineering, Yonsei University)
  • 박찬석 (연세대학교 공과대학 전기공학과) ;
  • 이정환 (연세대학교 공과대학 전기공학과) ;
  • 이준영 (연세대학교 공과대학 전기공학과) ;
  • 김준수 (삼성의료원 심혈관센터 순환기내과) ;
  • 이명호 (연세대학교 공과대학 전기공학과)
  • Published : 1998.11.20
Download PDF
⟨ Previous Next ⟩

Abstract

The discrete Wigner-distribution(DWD) was implemented for the time-frequency analysis of heart rate variability signals. The smoothed cross-DWD was used to estimate time-varying power spectrum. Spurious cross-terms were suppressed using a smoothing data window and a Gauss frequency window. The DWD is very easy to implement using the FFT algorithm. Experiment show that the DWD follows well the instantaneous changes of spectral content of heart rate variability signals, which characterize the dynamics of autonomic nervous system response.

Keywords