Table 1.

Z-scores of true RoD values in a distribution of randomly selected “focal” electrodes.

	Max Cross Corr	Delta coherence	Theta Coherence	Alpha Coherence	Beta Coherence	Gamma Coherence	Mean Phase Coherence	Spectral Correspondence	F-E Similarity
Patient 1	−1.51	9.85	0.57	20.37	33.59	22.57	−0.41	−0.70	21.29
Patient 2	−1.81	1.19	−1.63	−2.58	−3.00	−2.40	−1.95	−0.06	7.16
Patient 3	4.75	5.14	6.96	8.23	5.77	4.61	4.41	7.67	9.20
Patient 4	−2.28	−2.39	−2.63	−2.18	−2.05	−1.55	−2.34	−1.52	2.84

For each patient and measure, a distribution of RoD values for randomly selected “focal” electrodes was formed and the z-score of the RoD value of the true SOZ electrodes is presented. The RoD z-score of the F-E similarity measure is higher than 2.576 for all patients demonstrating that the probability of achieving these results by chance is lower than .01. Surprisingly, for some of the measures a negative z-score is obtained. Negative value are caused when the SOZ electrodes are located in a region of the FH map which is dense with electrodes (both SOZ and non SOZ, see sub-figures 5g,5h and 5k for examples).