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Noise effects on the complex patterns of abnormal heartbeatsPatients at high risk for sudden death often exhibit complex heart rhythms in which abnormal heartbeats are interspersed with normal heartbeats. We analyze such a complex rhythm in a single patient over a 12-h period and show that the rhythm can be described by a theoretical model consisting of two interacting oscillators with stochastic elements. By varying the magnitude of the noise, we show that for an intermediate level of noise, the model gives best agreement with key statistical features of the dynamics.
Document ID
20040112336
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Schulte-Frohlinde, V.
(Boston University Boston, Massachusetts 02215, United States)
Ashkenazy, Y.
Ivanov, P. C.
Glass, L.
Goldberger, A. L.
Stanley, H. E.
Date Acquired
August 21, 2013
Publication Date
August 6, 2001
Publication Information
Publication: Physical review letters
Volume: 87
Issue: 6
ISSN: 0031-9007
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: P41RR13622
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Cardiopulmonary
Non-NASA Center

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