Table 7.

Mean gamma-amino-butyric-acid concentration (mmol/L) over time

ROI	Group	Visit 1	Visit 2	Visit 3	Visit 4
rACC	Pregabalin	0.29 (± 0.14)	0.38 (± 0.24)	0.37 (± 0.30)	0.31 (± 0.13)
	Placebo	0.33 (± 0.15)	0.40 (± 0.19)	0.26 (± 0.17)	0.58 (± 0.48)
DLPFC	Pregabalin	0.29 (± 0.12)	0.26 (± 0.20)	0.25 (± 0.14)	0.24 (± 0.16)
	Placebo	0.35 (± 0.194)	0.35 (± 0.16)	0.37 (± 0.09)	0.43 (± 0.20)
Thalamus left	Pregabalin	0.41 (± 0.26)	0.35 (± 0.19)	0.91 (± 0.47)	0.48 (± 0.26)
	Placebo	0.47 (± 0.32)	0.47 (± 0.21)	0.89 (± 0.67)	0.37 (± 0.15)
Right thalamus	Pregabalin	0.28 (± 0.21)	0.36 (± 0.27)	0.25 (± 0.10)	0.35 (± 0.16)
	Placebo	0.37 (± 0.20)	0.58 (± 0.62)	0.37 (± 0.29)	0.32 (± 0.27)

Data are presented as the mean ± SD