MIT-BIH Arrhythmia DB, fusion beats. 360 Hz; QRS morphology that is a hybrid of normal-conduction and ventricular-ectopic activation.
Standard analysis sees: right-skewed; time-irreversible (sharp rises, slow decay); multifractal. The atlas finds no named structure, but the source is distinctively extreme on E8 Lattice:std_profile (+4.4z) — beyond what the standard bank predicts for it.
E8 Lattice:std_profile | +4.4z | bank-miss 1.5σ |
Attractor Reconstruction:lyap_sum | -4.0z | bank-miss 1.2σ |
S² × ℝ (Thurston):height_drift | -3.4z | bank-miss 1.5σ |
Time Reversibility:increment_skewness_max | +2.3z | bank-miss 1.4σ |








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| Nearest neighbor | Distance | |
|---|---|---|
| ECG Normal | 2.57 | |
| ECG Supraventr. | 2.85 | |
| ECG Ventricular | 3.12 |
E8 Lattice › E8 Lattice:std_profile | rank 1/298 | 8.6584 |
Predictability › Predictability:transition_entropy_variance | rank 5/298 | 0.0647 |
S² × ℝ (Thurston) › S² × ℝ (Thurston):height_drift | rank 296/298 | -0.6043 |
Time Reversibility › Time Reversibility:increment_skewness_max | rank 5/298 | 1.0000 |
Ulam Spiral (Square) › Ulam Spiral (Square):diagonal_alignment | rank 296/298 | -0.2889 |