Shil'nikov homoclinic chaos is intimately related to type-III intermittency in isolated rabbit arteries: role of nitric oxide.
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.
Parthimos
D
D
Department of Diagnostic Radiology, Wales Heart Research Institute, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XN, United Kingdom.
Edwards
D H
DH
Griffith
T M
TM
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
D009569:Nitric Oxide; D011188:Potassium; D002118:Calcium