Phys. Rev. Lett. 87, 068104 (2001) [4 pages]Noise Effects on the Complex Patterns of Abnormal HeartbeatsReceived 6 November 2000; published 24 July 2001 Patients 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. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.068104
DOI:
10.1103/PhysRevLett.87.068104
PACS:
87.19.Hh, 05.40.Ca, 05.45.Tp, 89.75.Kd
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