Signal processing problems of neurocardiological fluctuations

Z. Gingl, L. Rudas, Péter Makra

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The spectral analysis of electrocardiogram (ECG) and blood pressure fluctuations is an important tool both in medical diagnostics and in theories that endeavour to account for the complex, feedbacked patterns of control mechanisms that regulate human circulation. In the case of ECG signals, the information is in the rate of heartbeats, which means that it is not the whole signal but only a so-called RR signal, containing the distances of beats, that serves as the basis of spectral processing. This RR signal is inherently discrete and unevenly sampled, which introduces a number of methodological problems: fast Fourier transformation (FFT) needs even sampling, and this means that some re-sampling (inserting new samples at equal distances) is necessary. In the case of blood pressure signals, the information is both in the amplitude itself and in the rate, consequently both an RR-like and a full recording-based treatment are usable here. In the present paper we review the different interpolation methods used in re-sampling, along with the Lomb periodogram that does not require re-sampling at all, and contrast the results they yield both for a model sine and for real signals. We also argue for a full recording-based treatment of blood pressure fluctuations, as they require no peak detection and thus avoid the artefacts that peak detection may cause.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages293-298
Number of pages6
Volume800
DOIs
Publication statusPublished - Nov 14 2005
EventUPoN 2005: 4th International Conference on Unsolved Problems of Noise and Fluctuations in Physics, Biology and High Technology - Gallipoli, Lecce, Italy
Duration: Jun 6 2005Jun 10 2005

Other

OtherUPoN 2005: 4th International Conference on Unsolved Problems of Noise and Fluctuations in Physics, Biology and High Technology
CountryItaly
CityGallipoli, Lecce
Period6/6/056/10/05

Fingerprint

signal processing
blood pressure
sampling
electrocardiography
recording
fast Fourier transformations
spectrum analysis
interpolation
artifacts
synchronism
causes

Keywords

  • Heart rate variability
  • Power spectral analysis

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Gingl, Z., Rudas, L., & Makra, P. (2005). Signal processing problems of neurocardiological fluctuations. In AIP Conference Proceedings (Vol. 800, pp. 293-298) https://doi.org/10.1063/1.2138627

Signal processing problems of neurocardiological fluctuations. / Gingl, Z.; Rudas, L.; Makra, Péter.

AIP Conference Proceedings. Vol. 800 2005. p. 293-298.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gingl, Z, Rudas, L & Makra, P 2005, Signal processing problems of neurocardiological fluctuations. in AIP Conference Proceedings. vol. 800, pp. 293-298, UPoN 2005: 4th International Conference on Unsolved Problems of Noise and Fluctuations in Physics, Biology and High Technology, Gallipoli, Lecce, Italy, 6/6/05. https://doi.org/10.1063/1.2138627
Gingl, Z. ; Rudas, L. ; Makra, Péter. / Signal processing problems of neurocardiological fluctuations. AIP Conference Proceedings. Vol. 800 2005. pp. 293-298
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