Local Holder regularity-based modeling of RR intervals

Olivier Barrière (1) , Jacques Lévy Véhel (1)

1 APIS - Analysis of irregular Processes, Images and Signal,applications in biology and medicine

We analyze the local regularity of RR traces from ECG through the computation of the so-called Hölder exponents. These exponents are at the basis of multifractal analysis, which has been shown to be relevant in the study of RR data. While multifractal analysis yields a global picture of the (statistical) distribution of regularity, we focus here on its time evolution. We show that this evolution is strongly correlated with the signal itself, a feature that seems to have remained unnoticed so far. We use this fact to build realistic synthetic RR traces.

Domaines: Probabilités [math.PR]

Olivier Barrière, Jacques Lévy Véhel. Local Holder regularity-based modeling of RR intervals. CBMS 2008, 21th IEEE International Symposium on Computer-Based Medical Systems, Jun 2008, Jyvaskyla, Finland. ⟨inria-00539046⟩