Gabazine activates a bicuculline-resistant and TPMPA-sensitive Cl− current in HMs.
Pentobarbital potentiates this response whereas allopregnanolone and midazolam do not.
The receptors involved are likely hybrid GABA receptors including ρ and γ subunits.
β amino acids activate strychnine-resistant, TPMPA-sensitive, sustained Cl− currents.
The resulting sustained inhibition should contribute to neuroprotection by taurine.