Table 1.

Statistical tests

	Data	Test	Data	Power, %	Effect size
a	Unknown	Paired t test	IL-CP excitatory	14.3	0.33
b	Normal	Paired t test	IL-CP inhibitory	97.3	1.62
c	Normal	Paired t test	PL-CP excitatory	77.9	0.97
d	Normal	Paired t test	PL-CP inhibitory	98.9	1.52
e	Normal	Unpaired t test	PL-CP vs IL-CP	91.8	1.45
f	Unknown	Paired t test	PL-CP vs IL-CP	77.2	1.03
g	Normal	Paired t test	PL-CA vs IL-CA	67.6	1.09
h	Unknown	Paired t test	IL-CP vs IL-CA	63.6	1.04
i	Normal	Paired t test	L2 vs L5 IL-CA	89.4	1.33

Data normality was determined using a Lilliefors test. Nonparametric statistical analysis produced similar results. Post hoc power analysis was performed using G*Power 3(v3.1.9.2, www.Gpower.hhu.de; Faul et al., 2007).