TABLE 3.

Low and high gamma powers for both CH-NATs and CH-PATs during 2-back WM testing.

2-back	NAT			PAT			P-value	Pooled SD	Cohen’s d
Regions	Ave	SD	Max K-S*	Ave	SD	Max K-S*
Low gamma (30–50 Hz)
F	0.37	1.02	0.11	−0.06	0.60	0.20	0.270	0.84	−0.51
C	0.58	0.99	0.11	0.00	0.55	0.22	0.121	0.80	−0.73
P	0.66	0.96	0.17	0.11	0.49	0.16	0.120	0.76	−0.73
LT	0.43	0.72	0.15	−0.22	0.63	0.25	0.045	0.68	−0.96
RT	0.58	0.76	0.14	0.10	0.91	0.17	0.214	0.84	−0.58
O	0.78	0.83	0.15	0.31	0.39	0.16	0.122	0.65	−0.73
High gamma (50–80 Hz)
F	0.60	1.30	0.16	−0.13	0.57	0.26	0.121	1.00	−0.73
C	0.70	1.24	0.24	−0.22	0.66	0.19	0.053	1.00	−0.93
P	0.90	1.22	0.22	−0.06	0.52	0.14	0.035	0.94	−1.02
LT	0.55	0.89	0.12	−0.16	0.59	0.21	0.051	0.76	−0.94
RT	0.62	1.13	0.20	−0.20	0.72	0.17	0.068	0.95	−0.87
O	0.87	1.09	0.18	0.14	0.56	0.17	0.077	0.86	−0.84

The pooled standard deviation was calculated to increase the precision of the standard deviation between both CH-NATs and CH-PATs. Clinical significance was established using Effect Size (ES) under Cohen’s Criteria. * K-S values are based on α = 0.05 critical value of 0.41. SD, standard deviation; K-S, Kolmogorov-Smirnov test.