Synchronization patterns in cerebral blood flow and peripheral blood pressure under minor stroke

Zhi Chen; Plamen Ch. Ivanov; Kun Hu; H. Eugene Stanley; Vera Novak

doi:10.1117/12.497209

7 May 2003 Synchronization patterns in cerebral blood flow and peripheral blood pressure under minor stroke

Zhi Chen, Plamen Ch. Ivanov, Kun Hu, H. Eugene Stanley, Vera Novak

Proceedings Volume 5114, Noise in Complex Systems and Stochastic Dynamics; (2003) https://doi.org/10.1117/12.497209
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States

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.

Citation Download Citation

Zhi Chen, Plamen Ch. Ivanov, Kun Hu, H. Eugene Stanley, and Vera Novak "Synchronization patterns in cerebral blood flow and peripheral blood pressure under minor stroke", Proc. SPIE 5114, Noise in Complex Systems and Stochastic Dynamics, (7 May 2003); https://doi.org/10.1117/12.497209

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KEYWORDS

Blood pressure

Resistance

Cerebral blood flow

Blood circulation

Heart

Electronic filtering

Arteries

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