Table 1.

Serum concentrations of progesterone and allopregnanolone after the oral administration of 400 mg of micronized progesterone (nmol/L)

Time (min)	Progesterone	Allopregnanolone
0 (baseline)	1.9 ± 0.3	0.6 ± 0.1
80 (before fMRI session)	16.2 ± 7.3	23.3 ± 8.4
190 (after fMRI session)	174.2 ± 68.4	185.8 ± 26.6

Data are mean ± SEM.