A1, Representative recording from a VB thalamic neuron showing the inward current induced by 3 mM GHB, and its blockade by CGP 55845 revealing no residual current. A2, Group results showing the current induced by GHB and its complete blockade by CGP 55845. B1, Representative recording from a dentate gyrus (DG) granule cells showing the inward current induced by 3 mM GHB, and its blockade by CGP 55845 revealing no residual current. B2, Group results showing the current induced by GHB and its complete blockade by CGP 55845. C1, Representative recording from a striatal medium spiny neuron (MSN) the complete lack of response to 3 mM GHB and CGP 5584. C2, Group results showing the lack of effect of GHB or CGP 55845.