Universal scaling properties of type-I intermittent chaos in isolated resistance arteries are unaffected by endogenous nitric oxide synthesis

Parthimos, Dimitris ORCID: https://orcid.org/0000-0003-3852-323X, Edwards, David Hughes and Griffith, Tudor Morley 2001. Universal scaling properties of type-I intermittent chaos in isolated resistance arteries are unaffected by endogenous nitric oxide synthesis. Phys Rev E Stat Nonlin Soft Matter Phys 64 (6) , 061906. 10.1103/PhysRevE.64.061906

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Abstract

Spontaneous fluctuations in flow in isolated rabbit ear resistance arteries may exhibit almost-periodic behavior interrupted by chaotic bursts that can be classified as type-I Pomeau-Manneville intermittency. This conclusion was supported by the construction of parabolic return maps and identification of the characteristic probability distributions for the number of oscillations per laminar segment (n) associated with the type-I scenario. Pharmacological inhibition of nitric oxide (NO) synthesis by the vascular endothelium modulated the dynamics of the reinjection mechanism, and thus the generic shape of the probability distribution for n. Nevertheless, average laminar length was related to a derived bifurcation parameter ɛ according to power-law scaling of the form 〈n〉∼ɛβ, where the estimated critical exponent β was close to the theoretical value of -0.5 both in the presence and absence of NO synthesis.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Additional Information:	5 pages.
Publisher:	American Physical Society
ISSN:	1539-3755
Last Modified:	17 Oct 2022 08:24
URI:	https://orca.cardiff.ac.uk/id/eprint/48

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