System analysis of blood circulation based on coherence power transfer: From electrical driving to mechanical vibration

Ching Chuan Wei*, Pei-Chen Lo, Lin-Kun Wu

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We analyze blood circulation based on the basis of the system viewpoint and coherence power transfer from electrical energy (ECG) to mechanical power (blood pressure wave). The coherent oscillation between the driving signal and the vibration of the cardiovascular system is investigated by coherence function and the perturbations of the system are found. In addition, we develop a mathematical equation to describe the phenomenon. The average peak coherence value S for the first five harmonics is utilized as an index to quantify the power coherence effect. The evaluated p-value (< 0.01) reveals that the distinction of power coherence between the healthy subjects and cardiovascular patients is significant. Consequently, we conclude that if the S approaches a value close to one, the output is almost completely attributed to input and fewer perturbation signals influence the system; therefore, the cardiovascular system stays in a better condition. Conversely, if S approaches a value less than one, larger perturbations will worsen the cardiovascular system condition.

Original languageEnglish
Pages (from-to)2863-2868
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number4 A
DOIs
StatePublished - 7 Apr 2006

Keywords

  • Blood pressure wave
  • Cardiovascular
  • Coherence
  • ECG
  • Resonance

Fingerprint Dive into the research topics of 'System analysis of blood circulation based on coherence power transfer: From electrical driving to mechanical vibration'. Together they form a unique fingerprint.

  • Cite this