The purpose of this study is to investigate the effects of perampanel on the pharmacokinetics (PK) of a single-dose oral contraceptive (OC)containing ethinylestradiol (EE) and levonorgestrel (LN) (Microgynon-30) and to investigate the effects of repeated dosing of OC containing EE and LN (Microgynon-30) on the PK of a single dose of perampanel.