Sensitively recorded breathing signals of rats and their nonlinear dynamics


Zeren T., Ozbek M., Ekerbicer N., Yalcin G. C. , Akdeniz K. G.

JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS, vol.70, no.4, pp.573-577, 2007 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 70 Issue: 4
  • Publication Date: 2007
  • Doi Number: 10.1016/j.jbbm.2007.01.007
  • Journal Name: JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.573-577

Abstract

Nonlinear dynamical properties of sensitively recorded breathing signals (SRBS), which include cardiac induced air flow pulsations so-called pneumocardiogram (PNCG) signals, are investigated, in this methodological study. For this purpose, we assessed the SRBS of laboratory rat. The nonlinear behaviors of SRBS were investigated by the reconstructing phase space, using the autocorrelation function and the false nearest neighbor method. The chaotic SRBS attractors were discussed from the point of view of the cardiopulmonary system. This method can be used to assess the heart performance and respiratory mechanics, and might be useful to design for the physiological studies of cardiorespiratory system in small laboratory animals. (C) 2007 Elsevier B.V. All rights reserved.