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Proceedings Paper

Synchronization patterns in cerebral blood flow and peripheral blood pressure under minor stroke
Author(s): Zhi Chen; Plamen Ch. Ivanov; Kun Hu; H. Eugene Stanley; Vera Novak
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Paper Abstract

Stroke is a leading cause of death and disability in the United States. The autoregulation of cerebral blood flow that adapts to changes in systemic blood pressure is impaired after stroke. We investigate blood flow velocities (BFV) from right and left middle cerebral arteries (MCA) and beat-to-beat blood pressure (BP) simultaneously measured from the finger, in 13 stroke and 11 healthy subjects using the mean value statistics and phase synchronization method. We find an increase in the vascular resistance and a much stronger cross-correlation with a time lag up to 20 seconds with the instantaneous phase increment of the BFV and BP signals for the subjects with stroke compared to healthy subjects.

Paper Details

Date Published: 7 May 2003
PDF: 9 pages
Proc. SPIE 5114, Noise in Complex Systems and Stochastic Dynamics, (7 May 2003); doi: 10.1117/12.497209
Show Author Affiliations
Zhi Chen, Boston Univ. (United States)
Plamen Ch. Ivanov, Boston Univ. (United States)
Harvard Medical School (United States)
Kun Hu, Boston Univ. (United States)
H. Eugene Stanley, Boston Univ. (United States)
Vera Novak, Harvard Medical School (United States)

Published in SPIE Proceedings Vol. 5114:
Noise in Complex Systems and Stochastic Dynamics
Lutz Schimansky-Geier; Derek Abbott; Alexander Neiman; Christian Van den Broeck, Editor(s)

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