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. 2019 Oct 28;377(2160):20190045. doi: 10.1098/rsta.2019.0045

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© 2019 The Author(s)

Published by the Royal Society. All rights reserved.

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Figure 3. — An illustration of the model data. Panel (a) shows an epoch of 1000 inter-beat intervals and (b) is its zoomed version, with only 100 intervals shown. From bottom to top: artificial sequence of inter-beat intervals (black), its respiratory-related (red) and non-respiratory-related (blue) components. The latter two curves are shifted upwards for visibility. Panel (a) clearly shows that long-scale variability is preserved in the non-respiratory component, while in (b) one can see that variation with the respiration period is removed from this component. (Online version in colour.)