Table 2.

ECoG recordings and results

ID	S/D	Time	No. seizures	r-spectrum peak band	No. states (II, Pre, SZ, Post)	Earliest max ROC AUC IF/time	Earliest max ROC AUC CF/time	P value state transitions
Group 1
1	75/0	132.1	3	Beta	(3, 3, 6, 2)	0.93/0.17	0.83/0.55	<0.0001
2	40/0	113.4	2	Beta	(2, 2, 5, 2)	0.77/0.0	0.74/0.41	0.25
3	94/0	131.7	4	Alpha	(2, 4, 11, 1)	0.91/0.14	0.76/0.94	0.0006
Group 2
4	82/0	137.4	4	Beta	(3, 3, 4, 5)	0.85/0.0	0.41/0.21	<0.0001
5	79/0	45.9	5	Beta	(2, 2, 3, 2)	0.87/0.28	0.73/0.99	0.041
6	65/2	231.4	2	Beta	(3, 2, 2, 2)	0.87/0.0	0.61/0.13	0.55
7	99/4	129.5	2	Theta	(2, 2, 3, 3)	0.84/0.24	0.46/0.01	0.62
8	101/3	137.7	7	Beta	(5, 3, 4, 4)	0.50/0.99	0.60/0.04	0.83
Group 3
9	89/0	106.3	4	Beta	(3, 3, 6, 2)	0.54/0.84	0.66/0.39	0.0013
10	110/0	140.1	3	Beta	(2, 5, 3, 3)	0.43/0.39	0.63/0.01	0.84
11	116/3	132.2	4	Gamma	(3, 1, 3, 1)	0.56/0.69	0.47/0.11	0.0004
12	112/2	131.5	2	Gamma	(2, 3, 2, 2)	0.56/0.0	0.54/0.29	0.084

Number of electrodes, seizures, and brain states, and results of the ROC analysis. II, interictal; Post, postictal epoch; Pre, preictal epoch; S/D, number of subdural (S) and depth (D) electrodes; SZ, seizure; “Time” denotes the duration (in hours) of the continuous recordings per patient. The numbers under the column labeled “No. states” indicate the number of brain states uncovered during each period II, Pre, SZ, and Post. The “Earliest max ROC AUC IF/time” is the maximum area under the ROC curve achieved when using the centroid vector obtained in the IF state near the beginning of seizure. The “Earliest max ROC AUC CF/time” is the maximum area under the ROC curve achieved when using the centroid vector obtained in the CF state near the middle-to-end of seizure.