title: Sensitively recorded breathing signals of rats and their nonlinear dynamics.
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.
authors.affiliation: Celal Bayar University Medical School, Department of Biophysics, Dekanlik Binasi, Uncubozkoy, 45030, Manisa, Turkey. tzeren@bayar.edu.tr
authors.forename: Tamer
authors.initials: T
authors.lastname: Zeren
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ozbek
authors.forename: Nuran
authors.initials: N
authors.lastname: Ekerbiçer
authors.forename: G Ciğdem
authors.initials: GC
authors.lastname: Yalçin
authors.forename: K Gediz
authors.initials: KG
authors.lastname: Akdeniz
mesh_terms: D000818:Animals; D002138:Calibration; D006321:Heart / Q000502:physiology; D001239:Inhalation / Q000502:physiology; D039703:Logical Observation Identifiers Names and Codes; D051381:Rats; D012119:Respiration; D015656:Respiratory Mechanics / Q000502:physiology*; D012680:Sensitivity and Specificity; D014132:Trachea / Q000502:physiology