EEG Signals Analysis Using Multiscale Entropy for Depth of Anesthesia Monitoring during Surgery through Artificial Neural Networks

Table 2

Different combinations of multiple scales changing from 1 to 20 via ANN for monitoring DOA using EACL as gold standard. 1-1 in the first column represents the input data of ANN model that is the entropy at time scale 1, and 1–20 indicates that there are multiple scales from 1 to 20 and so on.

Scale(s)	Before filtering			After filtering
		Corrcoef	CV (%)		Corrcoef	CV (%)
1-1	0.56	0.56 ± 0.16	28.57	0.61	0.58 ± 0.21	36.21
1-2	0.80	0.80 ± 0.07	8.75	0.82	0.83 ± 0.05	6.02
1–3	0.81	0.82 ± 0.06	7.32	0.82	0.83 ± 0.05	6.02
1–4	0.82	0.82 ± 0.07	8.54	0.84	0.85 ± 0.05	5.88
1–5	0.81	0.81 ± 0.06	7.41	0.84	0.84 ± 0.05	5.95
1–6	0.81	0.82 ± 0.07	8.54	0.84	0.85 ± 0.05	5.88
1–7	0.83	0.83 ± 0.06	7.23	0.85	0.85 ± 0.04	4.71
1–8	0.83	0.83 ± 0.06	7.23	0.84	0.85 ± 0.04	4.71
1–9	0.83	0.83 ± 0.06	7.23	0.85	0.85 ± 0.04	4.71
1–10	0.84	0.84 ± 0.05	5.95	0.84	0.84 ± 0.05	5.95
1–11	0.84	0.84 ± 0.05	5.95	0.85	0.85 ± 0.04	4.71
1–12	0.84	0.84 ± 0.05	5.95	0.85	0.86 ± 0.04	4.65
1–13	0.83	0.83 ± 0.06	7.23	0.86	0.86 ± 0.04	4.65
1–14	0.85	0.85 ± 0.05	5.88	0.86	0.86 ± 0.04	4.65
1–15	0.84	0.84 ± 0.05	5.95	0.86	0.86 ± 0.04	4.65
1–16	0.85	0.85 ± 0.05	5.88	0.86	0.86 ± 0.04	4.65
1–17	0.85	0.85 ± 0.05	5.88	0.86	0.86 ± 0.04	4.65
1–18	0.86	0.85 ± 0.05	5.88	0.86	0.87 ± 0.03	3.45
1–19	0.86	0.85 ± 0.05	5.88	0.86	0.86 ± 0.04	4.65
1–20	0.86	0.85 ± 0.05	5.88	0.86	0.86 ± 0.04	4.65
2–20	0.82	0.82 ± 0.06	7.32	0.81	0.81 ± 0.07	8.64
Mean ± std	0.82 ± 0.06	0.82 ± 0.06	7.83 ± 4.85	0.84 ± 0.05	0.84 ± 0.06	6.67 ± 6.85