Fig. 1.

Potentiation of IGABA by Sophora flavescens extract (EtOAc, 100 μg/mL). a The mean IGABA potentiation of 55.0 ± 7.4% (n = 3; compared to 100% control) was observed. b Chloride currents through α1β2γ2S GABAA receptors induced by GABA EC3–10 (control; left column) and currents during co-application of GABA (EC3–10) and 100 μg/mL of the Sophora flavescens extract (right column)