title: Shil'nikov homoclinic chaos is intimately related to type-III intermittency in isolated rabbit arteries: role of nitric oxide.
abstract: We provide experimental evidence for the existence of Shil'nikov homoclinic chaos in the fluctuations in flow which can be observed in isolated perfused rabbit ear arteries, and establish a close association between homoclinicity and type-III Pomeau-Manneville intermittent behavior. The transition between the homoclinic scenario and type-III intermittency is clarified by a mathematical model of the arterial smooth muscle cell. Simulations of the effects of nitric oxide (NO) by the vascular endothelium on these patterns of behavior closely match experimental observations.
authors.affiliation: Department of Diagnostic Radiology, Wales Heart Research Institute, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XN, United Kingdom.
authors.forename: D
authors.initials: D
authors.lastname: Parthimos
authors.forename: D H
authors.initials: DH
authors.lastname: Edwards
authors.forename: T M
authors.initials: TM
authors.lastname: Griffith
mesh_terms: D000818:Animals; D001158:Arteries / Q000378:metabolism*; D002118:Calcium / Q000737:chemistry; D004305:Dose-Response Relationship, Drug; D004730:Endothelium, Vascular / Q000378:metabolism; D008564:Membrane Potentials; D015233:Models, Statistical; D008962:Models, Theoretical; D009130:Muscle, Smooth / Q000166:cytology*; D009569:Nitric Oxide / Q000378:metabolism / Q000502:physiology*; D017711:Nonlinear Dynamics; D009991:Oscillometry; D011188:Potassium / Q000737:chemistry; D011817:Rabbits; D013997:Time Factors
chemical_list: D009569:Nitric Oxide; D011188:Potassium; D002118:Calcium