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Titolo:
DYNAMIC DETECTION OF RHYTHMIC OSCILLATIONS IN HEART-RATE TRACINGS - ASTATE-SPACE APPROACH BASED ON 4TH-ORDER CUMULANTS
Autore:
PILGRAM B; CASTIGLIONI P; PARATI G; DIRIENZO M;
Indirizzi:
MCGILL UNIV,DEPT PHYSIOL,CTR NONLINEAR DYNAM,3655 DRUMMOND ST MONTREAL PQ H3G 1Y6 CANADA FDN PRO JUVENTUTE,LARC CTR BIOINGN I-20148 MILAN ITALY GRAZ UNIV,INST MATH A-8010 GRAZ AUSTRIA IST SCI OSPED S LUCA,CTR AUXOLOG ITALIANO I-20149 MILAN ITALY
Titolo Testata:
Biological cybernetics
fascicolo: 4, volume: 76, anno: 1997,
pagine: 299 - 309
SICI:
0340-1200(1997)76:4<299:DDOROI>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
RATE-VARIABILITY; SPECTRAL-ANALYSIS; HARMONIC RETRIEVAL; BLOOD-PRESSURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
B. Pilgram et al., "DYNAMIC DETECTION OF RHYTHMIC OSCILLATIONS IN HEART-RATE TRACINGS - ASTATE-SPACE APPROACH BASED ON 4TH-ORDER CUMULANTS", Biological cybernetics, 76(4), 1997, pp. 299-309

Abstract

This paper presents a new procedure specifically aimed at providing adynamical detection of the oscillations occurring in long-term heart-rate (HR) tracings. The procedure is based on a time-variant state-space modelling of the fourth-order cumulants of the HR signal. The state-space estimator was selected because of its demonstrated capability to distinguish between deterministic and stochastic components of the signal, while the fourth-order cumulants of the signal were used as input of the model to further reduce adverse effects of coloured, white and 1/f Gaussian noise possibly present in the input data. The procedure was tested by the analysis of simulated signals and its performance was compared with the results obtained by state-space modelling applied directly on the test signals (instead of on the fourth-order cumulants of the signals) and by the more traditional auto-regressive modelling. The comparison has shown a clear superiority of the proposed procedure over the other techniques in discriminating deterministic oscillations from coloured noise. Finally, the applicability of the procedureto biological data was verified by analysing five experimental HR tracings recorded in normal subjects during laboratory and daily life conditions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 10:37:01