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Evolution in time and scales of the stability of heart interbeat rate

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Academic year: 2018

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Figure

Fig. 1: (a) Synthetic nonstationary time series representing thefrequency deviation of an oscillator (According to AVAR, the signal seems a white noise (N = 1024); (b) its AVAR,σy(τ) vs
Fig. 2: Diurnal records of (a) a normal subject and (b) a CHFpatient.
Fig. 4: Stability analysis for a CHF patient (fig. 2(b)): (a) theDAVAR profile; (b) µt(τ); and, (c) γτ(t).
Fig. 6: (Colour on-line) Scatter plots of the DAVAR scalingexponent, represented by µt(τ), for normal (circles) and CHF(diamonds) subjects: (a) short term, (b) long term, (c) shortscale, and (d) large scale.

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