On Consistency of Cross-Approximate Entropy in Cardiovascular and Artificial Environments

Figure 1

Examples of real cardiovascular signals and of artificially generated signals. (a) SBP signal (gray) and PI signal (green) recorded from a rat at baseline condition, exposed to restraint stress and exposed to shaker stress. (b) SBP (gray) and R-R (green) signals recorded from a healthy volunteer. (c, d) Artificially generated signals with zero mean and standard deviation equal to 1; normal distribution (c) and uniform distribution (d).

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