Figure 1From: Automatic online detection of atrial fibrillation based on symbolic dynamics and Shannon entropy Example for the application of this method for detecting AF. (a) Raw RR interval sequence x n ; (b) Low scale reference xl n ; (c) High scale reference xh n ; (d) Difference Δ RR n = x n ′ − xl n ′ ; (e) The distribution of symbols sy n ; (f) The relevant word sequence of sy n in (e), and (g) The distribution of SE ℋ ′′ (A).Back to article page