NONLINEAR DYNAMICS IN THE BEAT-TO-BEAT VARIABILITY OF SYMPATHETIC ACTIVITY IN DECEREBRATE CATS

Authors
PORTA A BASELLI G MONTANO N GNECCHIRUSCONE T LOMBARDI F MALLIANI A CERUTTI S
Citation
A. Porta et al., NONLINEAR DYNAMICS IN THE BEAT-TO-BEAT VARIABILITY OF SYMPATHETIC ACTIVITY IN DECEREBRATE CATS, Methods of information in medicine, 33(1), 1994, pp. 89-93
Citations number
9
Categorie Soggetti
Medicine Miscellaneus","Computer Science Information Systems
Journal title
Methods of information in medicine → ACNP
ISSN journal
00261270
Volume
33
Issue
1
Year of publication
1994
Pages
89 - 93
Database
ISI
SICI code
0026-1270(1994)33:1<89:NDITBV>2.0.ZU;2-8
Abstract
Non-linear interactions between low-frequency rhythms (0.1 Hz) of beat -to-beat variability series of sympathetic discharge and respiratory r hythm (0.3 Hz) are observed in decerebrate artificially ventilated cat s. Simple graphical tools as Poincare and recurrence maps are used to detect, in a qualitative way, phase-locking phenomena. Non-parametric bispectral analysis is also carried out to quantify the degree of seco nd-order coupling between oscillations at different frequencies.