(-)-Bicuculline (methobromide)

(-)-Bicuculline methobromide is a potent GABAA blocker. (-)-Bicuculline methobromide alters membrane properties and firing pattern. (-)-Bicuculline methobromide reduces the Apamin-sensitive afterhyperpolarization, while Apamin is a toxin isolated from bee venom to block small conductance Ca2+ -activated K+ channels. (-)-Bicuculline methobromide facilitates burst firing via blocking apamin-sensitive Ca2+ -activated K+ current.