the postsynaptic effects mediated by gabab receptors , i.e. , the baclofen-induced hyperpolarization , the bicuculline-resistant gaba response , and the slow inhibitory postsynaptic potential elicited by ca1 afferent stimulation , are all blocked by pertussis toxin ( which inactivates some g proteins ) .
C0004609
baclofen
C0016904
gaba