Fig. 4From: Nonlinear analysis of beat-to-beat variability of action potential time series data identifies dynamic re-entrant substrates in a hypokalaemic mouse model of acquired long QT syndromePeaks for very low- (A), low- (B) and high-frequency (C), their corresponding powers (D–F), low-frequency to high-frequency ratio (G) and total power (H). The percentage powers for very low- (I), low- (J) and high-frequency (K) bands (n = 7 hearts)Back to article page