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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Heart Rhythm. 2011 Oct 12;9(3):449–456. doi: 10.1016/j.hrthm.2011.10.013

Figure 4.

Figure 4

Figure 4

Effect of random noise on the alternans estimation. (A) Kscore as a function of the amplitude of random noise added to the alternating time series and the amplitude of the signal. (B) Kscore as a function of the amplitude of the signal for distinct random noise values. (C) Amplitude of the signal as a function of the amplitude of the noise for Kscore = 3.0 (σs = 0.1248 * σm − 0.0043; p<0.0001). (D) Alternans voltage as a function of the alternans noise for distinct random noise values.